1 : Amoeba moving slowly

An amoeba moves slowly by extending fine pseudopods in all directions. The center of its body is full of food particles and seems to be slightly .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis amoeba is either Filamoeba or Vampyrella. When it moves, numerous threadlike pseudopodia .....

2 : Turning around

A small ciliate with relatively long cilia and cirri is randomly bouncing around between particles. When viewed from above, it appears round, but.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Aspidisca. Vertical lines along the back of the body suggest that it is Aspid.....

3 : Large ciliate foraging

A large slendar ciliate is foraging busily between particles. In this top view, we can see cilia and cirri around its mouth and rear end.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be Paraurostyla. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Urostyla.....

4 : Mysterious behavior of Bacillaria

Bacillaria is a colony in which numerous individual diatoms are connected. The individual diatoms are lined up side by side, which looks like a w.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is definitely a type of Bacillaria, possibly Bacillaria paxillifer. http://proti.....

5 : A strange-shaped Euglena

A dark green Euglena is moving very slowly. The body is longer and seemingly less flexible compared to other types of Euglena. It twists its body.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Euglena spirogyra, which is often found in wet media such as marsh, swamp and.....

6 : Two algae cells

Two algal cess shaped like slendar half moons are touching at one end. We can see small particles moving in on of the algae. A Euglena stops by f.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism looks similar to Cymbella, but its shape would seem to indicate Amphora. http://.....

7 : Algae with horseshoe-shaped chloroplast

The spaces between particles are passage ways for microorganisms. Bacteria, flagellates, small ciliates and diatoms meander among the particles, .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis is a diagonal top view of Paulinella. http://protist.i.hosei.ac.jp/PDB/Images/Sarcodina/P.....

8 : A jumping ciliate

A tiny ciliate with a indentation in the middle of its body is completely still. Its cilia are extended but unmoving, as if it were in a coma. Fo.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Uronema. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Uro.....

9 : A trapped Euglena

A Euglena is stuck to a particle and appears to be trapped. The body is distorted from struggling to break free, and it remains stuck in the same.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe title of this video, “Euglena”, may not be correct. Two long protuberances extend from the.....

10 : A round Euglena

The mysterious movements inside of an aggregate are being caused by a Euglena behind it. For a while the organisms repeatedly stretches and shrin.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis spinning organism is Euglena, though from this video it is unclear which species it is.

11 : Rich microbial world in the river

River bottoms are composed of accumulated aggregated particles, pieces of sand grains and pland debris, whose surfaces are covered with bacteria......
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism is not Diatoma but Biddulphia or Pleurosira. Diatoma http://protist.i.hosei.ac.jp.....

12 : Euglena comes in and out of aggregate

Several Euglena organisms go in and out of a large aggregate as if it were a comfortable residence for them.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism may be Euglena viridis, but because the shape of the chloroplasts is vague in thi.....

13 : Algae connected like a raft

Four individual algal cells are connected, forming a colony shaped like a raft, which allows it to float freely in water. This colony is standing.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a mature Scenedesmus quadricauda. http://protist.i.hosei.ac.jp/PDB/Images/Chl.....

14 : Resting amoeba

Only the outer edge of this amoeba remains transparent as the center of its body is packed with food particles. Perhaps it is resting between meals.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be Vannella. http://protist.i.hosei.ac.jp/PDB/Images/Sarcodina/Vannella/inde.....

15 : Ciliate in the process of division

In this view of a dividing ciliates, the process of division is almost finished, but two daughter cells are still connected. The cirri around the.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe three long cirri at the rear end indicate that this organism may be Stylonychia. http://p.....

16 : Behavior of Euplotes

Behavior of Euplotes A large ciliate called Euplotes is gathering food with the dense cilia around its mouth. Small flagellates are sucked into t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to say whether this organism is Euplotes eurystomus or E. woodruffi, because .....

17 : Is it dividing?

Several sizes of diatoms are living in Hirose River. This is one of the largest, and we can see two cells are surrounded by a membrane. Each cell.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe yellowish-brown structure in one of these diatom cells may be a chloroplast losing its sha.....

18 : Unknown organism

A small green organism stands still near a particle. It may be a flagellate because a flagellum-like structure is briefly seen.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityI cannot detect the flagellum-like structure as described in the video comments. Based on it.....

19 : Ciliate busily foraging

A ciliate with a slender body is hanging around a particle, and sometimes sticks its head into the particle, probably for foraging. We can see pl.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityStylonychia is characterized by three straight cirri at the rear end of the cell. http://prot.....

20 : Unknown organism

A ciliate-like organism is sticking its head into aggregate. Various types of diatoms come in and out of the aggregate, pushing against this unkn.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe shape of this organism does not change at all, and even the cytoplasm inside does not mov.....

21 : Ciliate with a very long neck

This ciliate has a very long and narrow neck with a mouth at the bent tip. Twisting its body allows it to move through the narrow openings of agg.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to the genus Litonotus which includes numerous species. Without identi.....

22 : Foraging ciliate

A ciliate with a slendar body is busily foraging among particles. Judging from the cirri in front and rear, it appears to belong to the group of .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism is not Stylonichia as mentioned in the video title; rather it belongs to genus Ox.....

23 : Travelling Synula

Synula, a colony of brown flagellates is travelling from particle to particle. The colony is composed of about ten or more individual flagellates.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe commentary in the video “One member seems to be dividing” may not be correct. Although it .....

24 : Particle surface as a rich environment

This view shows the rolling locomotion of Synula between particles. The surface of each particle is covered with bacteria and algae. These biofil.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityA plate-like figure appearing right side of the video is a colony of blue-green algae, Merism.....

25 : Coleps as a hunter

Coleps is a small ciliate covered with a hard cell wall almost like armor. When coleps finds feeble organisms, it attacks them forcefully, but he.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Coleps hirtus. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Coleps/ind.....

26 : Helizoa with a peculiar structure

A helizoa-like organism is moving slowly, extending many stiff projections called axopods. Several particles are attached to the axopods, so the .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Raphidiophrys which belongs to the larger group Heliozoea. http://protist.i......

27 : Pollen found in river

From the characteristic shape, this may be the pollen of a coniferous plant.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis picture shows pollen from a coniferous plant. Similar pictures can be seen at the follo.....

28 : Waiting and hunting

Lurking behind some particles, this ciliate (which may be Pleuronema) is waiting for food. The transparent membrane extending from the side of th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Pleuronema. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora.....

29 : Strobilidium hunting technique I

Hunting technique The shape of this ciliate called Strobilidium reminds us of a bell or strawberry. Although the body shape is similar to Vortice.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Strobilidium. The Protozoological Monograph, vol.3, 134, 2006 (Kreutz & Foi.....

30 : Strobilidium hunting technique II

This is the top view of Strobilidium . We can see the strong whirlpool it creates from the way that surrounding organisms are sucked toward, and .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to determine whether the organism in this video is Strobilidium or Strombidium.....

31 : Strobilidium disturbs the hunting of Pleuronema

A ciliate called Pleuronema is hiding between particles waiting for food. It is driven away by a Strobilidium which repeatedly jumps into Pleuron.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism hiding between particles is Pleuronema marinum. Pleuronema marinum http://proti.....

32 : Strobilidium facing each other

Two Strobilidium are facing each other. The whirlpool between them is so strong that small flagellates around these bodies cannot swim freely. Th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to determine whether this organism is Strobilidium or Strombidium. Strobilid.....

33 : Unsuccessful conjugation

Two Strobilidium are connected to each other. Are they in the process of conjugation? In the top view, we cannot see a wall separating the organi.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThese 2 Strobilidium-like cells began their conjugation smoothly enough, but unfortunately th.....

34 : Microscopic view of active organisms

Various organisms such as Coleps, Strobilidium , Euglena, Diatom, and some small flagellates can be seen. This is the world of active microorgani.....
*Commentary by Prof. Yuji Tsukii, Hosei University(a) It is difficult to determine whether this organism is Strobilidium or Strombidium. Strob.....

35 : Ciliate feeding behavior

A large flat ciliate, which may be Euplotes, feeds by standing still, moving only the cirri surrounding its mouth and rear. We can see plenty of .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is likely to be Stylonychia mytilus, although we cannot see three cirri at the r.....

36 : Ciliate with green chloroplasts

This ciliate is deep green because chloroplasts are densely packed inside its body. These chloroplasts are continually moving along the inner cel.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is certainly Paramecium bursaria. http://protist.i.hosei.ac.jp/PDB/Images/Cilio.....

37 : Strobilidium cilia motion I

The cilia surrounding the mouth of Strobilidium are always moving. This organism has collected and stored numerous food particles in its body, bu.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to determine whether this organism is Strobilidium or Strombidium. Strobili.....

38 : Strombidium cilia motion II

This side view of Strombidium clearly shows the motion of cilia around the mouth.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to determine whether this organism is Strobilidium http://protist.i.hosei.ac.....

39 : Large and small ciliate hunting

A Strobilidium and a Stylonychia are feeding close to each other. Both ciliates are trying to attract food particles by moving the cilia around t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to determine whether this organism is Strobilidium http://protist.i.hosei.ac.....

40 : Travel of amoeba

An amoeba extends a number of fine pseudopods and moves very slowly. Here its movements is sped up to 10 times the normal speed, so it appears to.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis amoeba is Vexillifera or closely-related organism. Its method of locomotion is similar .....

41 : Swimming pleasantly

In the sediment of Hirose river, various microbes such as diatoms, flagellates, and ciliates are swimming in their own characteristic styles. In .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe round, green organisms spinning in this video is possibly Chlamydomonas, Chloromonas or a .....

42 : Foraging for food around particles

The front of this slendar ciliate is like a long bottle-neck and its rear end is like a needle. Both ends are denbsly covered with cilia. The org.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Uroleptus. It might be Uroleptus limnetis, but we can’t be su.....

43 : A sudden change of direction

This is a comparatively large oval flagellate with two flagella. The shorter flagellum moves actively at the front, while the longer one trails b.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Anisonema. There is not enough information to determine its s.....

44 : Dancing Euglena in front of Strobilibidium

A Strobilibidium with its strawberry-like shape creates a whirlpool through the motion of its mouth cilia. Surrounding organisms cannot resist th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is either Strombidium or Strobilidium, which are similar to each other. http:/.....

45 : Strobilibidium foraging behavior

Strobilibidium is basically a stationary feeder. It lacks a stalk but keeps a fixed position by attaching itself to other particles. When necessa.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is either Strombidium or Strobilidium which are similar to each other. http://p.....

46 : Testate amoeba

This testate amoeba has contracted its pseudopods inside its shell and remains still.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe shell surface of the Arcella (testate amoeba) is generally smooth, but in this video, vari.....

47 : A skillful hunter

A ciliate seems to be resting between particles. However, its somewhat passive style of hunting is quite efficient. When it waves a transparent m.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Histiobalantium natans. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Hi.....

48 : Amoeba seems to use particles

A hidden amoeba extends several pseudopodia from behind the end of one particle. The amoeba partially appears, but quickly hides by covering itse.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to say what this amoebae is, because the whole body is not shown in this video.....

49 : A strange organism near particles

A round organism with a brown center slowly moves along the edges of particles. It looks like Helizoa, but the axopods are arranged differently, .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Diplophrys in the group of Granuloreticulosea. http://protist.i.....

50 : A smoothly-gliding amoeba

A large amoeba is gliding along smoothly. Numerous food particles can be seen in its transparent body. Rather than extend pseudopodia to capture .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Vannella miroides in genus Vannella. http://protist.i.hosei.ac.jp/PDB/Images/.....

51 : A skilful navigator

In spite of having a long body, this ciliate is flat like a ribbon. The organism is thus able to move delicately through the narrow spaces betwee.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate may belong to either genus Loxodes or genus Remanella. http://protist.i.hosei.ac......

52 : A skilful navigator(enlarged)

In spite of having a long body, this ciliate is flat like a ribbon. The organism is thus able to move delicately through the narrow spaces betwee.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate may belong to either genus Loxodes or genus Remanella. http://protist.i.hosei.ac......

53 : A gentle-looking ciliate

Among a group of large, active ciliates, there is a tiny, delicate ciliate. It seems to be foraging among particles in a gentle way.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Cinetochilum margaritaceum. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophor.....

54 : Active foraging among particles

A large oval ciliate is actively foraging around particles. The brownish-black body is covered by dense cilia. The organisms greedy behavior remi.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityFrom the shape of the body, this organism may be Disematostoma butschilii. http://protist.i.ho.....

55 : Darting and dashing

A large ciliate whose whole surface is densely covered with cilia is darting around. It pauses for an instant and then dashes into a group of par.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Frontonia. From its long, flat body, it may be Frontonia leucas.....

56 : Without minding what happens

Among particles at the bottom of Hirose River, a small ciliate is foraging. This tiny organism is so absorbed in its search for food that it does.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityUnfortunately this organism is too small and lacking in remarkable features to determine what .....

57 : A small ciliate is foraging

Among particles at the bottom of Hirose River, a small ciliate is foraging.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis fairly small organism may be Cinetochilum margaritaceum. http://protist.i.hosei.ac.jp/PDB.....

58 : Solitary journey

The body of this flagellate is long and thin, and its single flagellum extends forward and remains stiff, except for actively vibrating the very .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate belongs to genus Peranema, most likely Peranema trichophorum, but there is sca.....

59 : Solitary journey (enlarged)

The body of this flagellate is long and thin, and its single flagellum extends forward and remains stiff, except for actively vibrating the very .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate belongs to genus Peranema, most likely Peranema trichophorum, but there is sca.....

60 : Caught, escaped and stuck again

After an intense struggle, an euglena frees itself from a particle and swims around for a while. However it gets caught by another particle. It c.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is probably Euglena viridis. http://protist.i.hosei.ac.jp/PDB/Images/Mastigophor.....

61 : Euglena changes its flexible shape

Euglena changes its flexible shape.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThere are several species of Euglena with a similar appearance. They can be distinguished from.....

62 : Wandering from particle to particle

A brownish-black ciliate is busily swimming between particles. Despite moving within a small area, it covers a large distance for its small size......
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate may belong to genus Prorodon. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/.....

63 : Diatoms and algae playmates?

One by one numerous diatoms approach a long chain of algae that is moving in a leisurely arc. Sometimes the diatoms snuggle against and push or p.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis blue-green alga belongs to genus Oscillatoria. http://protist.i.hosei.ac.jp/PDB/Images/Pr.....

64 : A gentle flagellate

This flagellate has two flagella of different lengths at the front. The shorter flagellum vibrates intensively and the longer one curves around t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate belongs to genus Anisonema. http://protist.i.hosei.ac.jp/PDB/Images/Mastigopho.....

65 : Jumping from particles

An organism is twitching in a narrow space between particles. After a while it begins to contract and expand its body, hides itself behind the pa.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs described in the video commentary, this is may be a ciliate, but it is difficult to know fo.....

66 : Capricious behavior of a flagellate

This flagellate has two flagella of different lengths at the front. The shorter flagellum vibrates intensively and the longer one curves around t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate belongs to genus Anisonema. http://protist.i.hosei.ac.jp/PDB/Images/Mastigopho.....

67 : An amoeba hunting for food I

Here a large amoeba is actively hunting and catching food in various ways. When a food particle becomes caught on the tip of the pseudopodium, th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is possibly a floating Vannella. http://protist.i.hosei.ac.jp/PDB/Images/Sarco.....

68 : An amoeba hunting for food II

When a ciliate or flagellate accidently runs into the amoebas body, two pseudopodia tightly grasp the unlucky prey and transfer it to the central.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism resembles Vanella in its radial shape, but unlike Vanella, it catches food whil.....

69 : An amoeba hunting for food III

When the amoeba concentrates on catching food using one or two pseudopodia, the remaining pseudopodia become very short. When many food particles.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism is Vexillifera. http://protist.i.hosei.ac.jp/PDB/Images/Sarcodina/Vexillifera/ind.....

70 : An amoeba hunting for food I (Long Version)

Here a large amoeba is actively hunting and catching food in various ways. When a food particle becomes caught on the tip of the pseudopodium, th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe beginning of this video, the amoeba looks like it might be a floating Vannella, which is d.....

71 : An amoeba hunting for food II (Long Version)

When a ciliate or flagellate accidently runs into the amoebas body, two pseudopodia tightly grasp the unlucky prey and transfer it to the central.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism is Vexillifera. http://protist.i.hosei.ac.jp/PDB/Images/Sarcodina/Vexillifera/ind.....

72 : Synula grows into a large colony and divides into smaller ones

Several Synula (colonies of brown flagellates) take turns feeding on a large particle. Successful feeding causes the Synula to grow larger, which.....
*Commentary by Prof. Yuji Tsukii, Hosei University(a) This video shows how a colony of Synula divides from one large colony to a smaller one, r.....

73 : Eating and growing

This large particle is covered with a bacterial biofilm, which provides a rich feeding ground for various organisms. As a Synula colony feeds on .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAlthough the commentary of this video says “each member flagellate repeatedly divides,” no mem.....

74 : Synula moving along aggregate surface

Large and small colony of Synula are moving around an aggregate. However, becoming too large may be inconvenient, so here we can see the division.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe title of this video, “dividing Synura” is incorrect. This video shows how a single colony .....

75 : Communication between different organisms?

An inactive flagellate is sitting completely still without moving. One after another, two small ciliates come to the front of the inactive flagel.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe title and the commentary of this video should be changed, because the organisms shown are .....

76 : A colony of green algae

A colony composed of about twenty green algae cells remains still. Its occasional movements may be caused by the flow of water, or the colony may.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityFrom the cell size and color, this organism is not green algae but blue-green algae. The organ.....

77 : Dancing Bacillaria

Many cells of Diatom are connected side by side and each cell is gliding back and forth. As a whole, it looks like a dancing bamboo blind.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityI’d like to add some comments about the Japanese names for genus Bacillaria. In Japanese, genu.....

78 : Journey of amoeba with particles

A hidden amoeba extends several slender pseudopodia from behind the end of one particle. As the amoeba comes to other particles, it extends pseud.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityTwo types of amoeba take turns appearing in this video. The first one is Vexillifera. http://p.....

79 : Encountering of two different amoebae I

Here a large amoeba is actively hunting and catching food one by one. After a while, a different amoeba appears in our field.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe first amoebae to appear may be Vexillifera or a floating Vannella. http://protist.i.hosei......

80 : Encountering of two different amoebae II

Two kinds of amoebae of different size and shape are coming in contact with each other, and then move away.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe amoebae shown in the upper part of the video may be Vexillifera or floating Vannella. htt.....

81 : How to elongate and divide?

Various sizes of Synura(flagellate colonies) visit the big particle to forage for food. To share the food equally, the colony needs to rotate per.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs Synura belongs to Chrysophyceae, its growth depends on photosynthesis. http://protist.i.hos.....

82 : Synula moving along aggregate surface

Synula-a colony of brown flagellates- travels around an aggregate, sometimes by tumbling and sometimes by sliding along the surface of the aggregate.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs Synura belongs to the algae group, it is not correct to use the word foraging. http://proti.....

83 : Two ciliates taking turns

A large, dark, oval ciliate is busily foraging around particles. Soon another type of ciliate with a slender shape joins in the foraging. Eventua.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe first ciliate is a smaller organism belonging to the genus Frontonia. http://protist.i.hos.....

84 : Feasting on particles

Particles in the river are composed of organic debris, aggregated soil particles, sand grains and minerals. Their surface is covered with nutrien.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityI have no special comments in this video.

85 : Struggle to get free

This flagellate is characterized by a teardrop shape, a short flagellum in front, and its rear end tapering off to a point. It usually moves by f.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Phacus torta. It is closely-related to genus Euglena, but unlike Euglena, it .....

86 :  Looking for food

A ciliate is foraging on the surface of particles with a mouth at the end of its bottleneck. Its slendar body tapers at the rear end, and both fr.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Uroleptus. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/U.....

87 : Flagellum stuck to a particle

A round green flagellate cannot move because one of its two flagella is stuck to a particle. Soon it breaks free and swim away.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Chlamydomonas. http://protist.i.hosei.ac.jp/PDB/Images/Chlorop.....

88 : Gliding amoeba

An amoeba is gliding smoothly across the glass slide under the microscope. The rim of its body is transparent, but the center of its body is fill.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a species of testate amoeba called Cochliopodium. http://protist.i.hosei.ac.j.....

89 : Journey of blue-green algae

Twelve cells are connected like a chain. They slowly begin their journey to another place despite the lack of any specialized moving apparatus. W.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is definitely a blue-green alga belonging to the genus Oscillatoria. Its classif.....

90 : Spinning and resting

A ciliate of light green color and flat oval shape is resting. Its long cilia are extended in all directions. After a while, as if suddenly awake.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe cilia of this organism and other features can be observed clearly in the first part of thi.....

91 : A still-life view of algae and diatoms

This is a tranquil scene featuring various kinds of diatoms and green algae, none of which is moving.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism in this video is not green algae but a diatom. Synedra http://protist.i.hosei.a.....

92 : An unknown organism

Two small, round, green cells are sitting still inside a transparent membrane, but we are not sure what this organism is.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism in the process of dividing could be either Chlamydomonas or Chlorococcum. Chla.....

93 : Stationary Euglena

Here we can see nine Euglena cells that are completely still. Are they weakened, or have their sticky bodies become caught on the wall of the con.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityVarious types of flagellates are included in the Euglena group. Some species constantly swim .....

94 : Algal cells among particles

A long colony of green algal cells is rigidly connected, resembling a pole. It moves in a straight line, either forward or backward, toward a par.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityClosterium acerosum is half visible behind a black particle http://protist.i.hosei.ac.jp/PDB.....

95 : Microbes among particles

First we see a small ciliate, Aspidisca, passing through a space surrounded by particles. Then a large slender ciliate appears and begins to look.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism approaching from the lower right may be Aspidisca cicada (previously called Aspi.....

96 : A Chilodonella ciliate

The front of this ciliate, Chilodonella, is slightly bent and flexibly changes shape when it touches an obstacle. The shape of its body resembles.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Chilodonella. It may be Chilodonella cucullulus, but we can’t b.....

97 : An unknown organism

An unknown organism stands still next to a particle. When observed in a time-lapse video, the particles inside the body move, which is usually a .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism trying to catch a small diatom on a particle is too small to identify with certa.....

98 : A ciliate with a stalk

This ciliate, Vorticella, attaches the end of its long stalk to a solid surface. Although the organism is anchored at the base, it feeds by expan.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be Vorticella convallaria, which is one of the most frequently observed of .....

99 : Euglenas attached to each other

Two single-celled flagellates, called Euglena, have become stuck on a solid surface and cannot move. When another Euglena joins them, it attaches.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism in the first scene is certainly Euglena viridis. http://protist.i.hosei.ac.jp/PD.....

100 : An unknown organism

A round brown organism with a yellow tint is standing still beside a particle, but we cannot tell what it is.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be a type of golden-brown algae, Crysophyceae, based on three main visible .....

101 : A round green flagellate

A round green flagellate is standing still. The body seems to be slightly hard and the flagellum at the front is moving, though not actively. Whe.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs the structure of the surface and inside of the cell cannot be detected clearly, it is diff.....

102 : Two ciliates: big and small

A small ciliate with cirri at the front and the rear is foraging among particles. Then a giant ciliate about four times larger appears, but it so.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe smaller organism is Balladyna, and the larger one is Remanella. http://protist.i.hosei.ac.....

103 : A leisurely green alga

A large algal cell more than 600 microns long is moving slowly. Both ends of its straight body are slightly tapered. We can see green particles i.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis is Closterium acerosum which lives in paddy or marsh areas. Two ways of moving are chara.....

104 : A busily foraging ciliate

This ciliate is busily foraging back and forth, changing directions and passing between particles. There are cirri at the front and rear of its s.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Amphisiella, which belongs to subclass Stichotrichia. http://protist.i.hosei.....

105 : A flagellate surrounded by a brown shell

A round, dark brown flagellate with a long flagellum swims around for a while, then stops beside a particle, still waving its flagellum vigorousl.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism Trachelomonas belongs to the Euglenid group and is surrounded by a shell. http.....

106 : A flagellate'method of locomotion

In this scene of many particles and various sizes of microbes, we can see a relatively large flagellate using an interesting method to get around.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Anisonema, which belongs to the Euglenid group. http://protist.i.hosei.ac.jp.....

107 : Cilia motion repels surrounding organisms

The whirlpool created by this Strombidium's cilia motion is so strong that small organisms are pulled toward the Strombidium, only to be repelled.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be either Strombidium or Strombilidium. Both organisms are distinguished b.....

108 : A strange-shaped ciliate

The shape of this ciliate, Stokesia, reminds us of a ski cap or a bag. Although it stands perfectly still, the cilia surrounding its broad mouth .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Vorticella http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Vorticella/ind.....

109 : A Euglena stuck to the container surface

This Euglena cannot move freely, probably because its flagellum or some part of its body is stuck on the container surface. It expands and contra.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityWithout checking the shape and distribution of chloroplasts inside the cell, it is difficult .....

110 : Synura collapsing at the air-water interface

A colony of brown flagellates, Synura, rolls slowly along the surface of particles or quickly rotates in open water. When it reaches the outer bo.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityTo identify the Synura species, an electron microscope is necessary to observe the cell's sca.....

111 : A feeble Euglena and a small organism

A Euglena and an unknown small organism are standing still in this view. Only the flagellum of the Euglena moves somewhat feebly.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThough the title of this video is a weakened Euglena, some species in the Euglena group exhibi.....

112 : Feeble organisms

Feeble organisms Two small organisms are attached to the surface of a swollen-looking, round organism, which is probably a weakened ciliate. The .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityWe can see a small attached diatom cell on the right side of the picture.

113 : A peanut-shaped ciliate

The shape of this ciliate reminds us of a peanut shell. We can see cirri at the front and rear ends of its slender body. To catch food, it repeat.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityHere we can see an Amphisiella with 5 transverse cirri at its rear end. http://protist.i.hos.....

114 : A flagellate colony on a stalk

A colony composed of about ten flagellates is attached to a long brown stalk. The stalk doesn’t move but the two flagella on each flagellate move.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Anthophysa, a colony of flagellate cells. It is interesting how the stalk, .....

115 : A flagellate colony on a stalk (continued)

A colony of flagellates is attached to the top of a brown stalk. Each flagellate in the colony is busily moving its flagella. Frequently, small f.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Anthophysa, also called Anthophysis. http://protist.i.hosei.ac.jp/PDB/Images.....

116 : A round green flagellate

A round green flagellate glides along and then stops to rest on the surface of an aggregate. Numerous fine green particles are contained inside t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityDepending on the number of flagella, the organism may be Carteria with 4 flagella, or Chlamyd.....

117 : A small ciliate moving delicately

A small ciliate about 30μin length is busily moving here and there. Its cilia are unusually long and thin compared to its body size, which makes .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Cinetochilum margaritaceum. http://protist.i.hosei.ac.jp/PDB/Images/Ciliopho.....

118 : Euplotes： a skillful hunter

A large Euplotes ciliate has characteristic cirri at the front and rear ends of its body. By actively waving the cilia surrounding its mouth, it .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Euplotes. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Euplotes/index.....

119 : Diatoms seem to play with green algae

A long colony of light-green algal cells proceeds in a straight line. Numerous diatoms accompany the algae on its journey, playfully interacting .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe title of this video is incorrect. This organism is not green algae but a blue-green alga.....

120 : An unusual large ciliate

A large, slender ciliate 500μin length is swimming quickly, twisting its flexible body like a ribbon. The front and rear ends are narrower than t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is in the genus Spathidium. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora.....

121 : Strobilidium with a protuberance

The first part of this recording shows a Strobilidium ciliate at a higher magnification, the second part at a lower magnification, and the last p.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityStrobilidium can be difficult to distinguish from Strombidium due to their similar shapes and .....

122 : An amoeba surrounded by diatoms

The body of this moving amoeba seems a little stiff. Small flagellates are frequently scooped inside, but after struggling for a while, they get .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe shape and movements of pseudopodia are the keys to identifying naked amoeba. This organi.....

123 : Microbes in spaces among particles

Small Halteria ciliates and numerous diatoms are swimming in the spaces among particles. From behind one particle, a Euglena flagellate shows hal.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe first organism to appear is Halteria. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/.....

124 : Coleps: a fierce hunter

A feeble ciliate is bitten by a Coleps. The poor ciliate desperately struggles to get away. However, the bite causes the inside particles to come.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis interesting video needs no additional comments.

125 : Conjugating ciliates attacked by Coleps

A pair of conjugating Oxytricha of different sizes are suddenly attacked by a Coleps. The smaller Oxitricha is bitten nearly in half, which cause.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis interesting video needs no additional comments.

126 : Giant ciliate expands and contracts

The movement of this large dark-brown ciliate is strange. Standing near a particle, it alternately extends and contracts its body, reaching a len.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis Spathidium syrtis appears quite full after eating a large meal. A feature of this group i.....

127 : Amazingly long earthworm-like ciliate

Large ciliates typically reach 500 microns in length, so this giant specimen may be a world record holder at 2000 microns in length. One end appe.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Spirostomum. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophor.....

128 : An injured ciliate

The abnormal shape of this ciliate seems to have been caused by a large bite, leaving the organisms weakened and able to move only feebly.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs the title suggests, this ciliate exhibits a very abnormal shape. It is possible that when t.....

129 : A ciliate’s strange projection

This ciliate has a strange projection at the rear end. There may be a missing piece from an attack by another organism, because this type of proj.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe projection at the rear end of this organism might be damage caused by sand particles when .....

130 : Why does it extend and contract?

This ciliate repeatedly extends and contracts its long, thin body, reaching a length of more than 1000 microns when extended, and 500 microns whe.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Spirostomum (as shown in video No.2). From its large size and c.....

131 : Foraging Euplotes

This large ciliate forages for food as it stands still among algal cells and particles. Its strategy for catching food is to vigorously move the .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is not Euplotes, as in the title states, but Stylonychia. http://protist.i.hosei.....

132 : Foraging and excreting

Euplotes creates a whirlpool to capture various sizes of microorganisms, including bacteria, small flagellates and even larger diatoms. The prey .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is not Euplotes, as in the title states, but Stylonychia. http://protist.i.hosei.....

133 : A lazy ciliate

This colorless ciliate seems to have a hard, partially concave surface. It is standing still, slowly moving the long cilia near its mouth. There .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism cannot be identified even to the genus level because the body was injured and fr.....

134 : Crawling on a particle surface

This small ciliate uses its cilia like arms and legs to crawl along the surface of a particle, probably to look for food. It has a long projectio.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Dysteria. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Dy.....

135 : Why does it rotate ?

The rear end of this small oval ciliate is slightly narrow and bent. The organism rotates in a stationary position. No one can guess why it conti.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism looks like it might be a fragmented ciliate, but it is also possible that this i.....

136 : What is this?

What is this?
*Commentary by Prof. Yuji Tsukii, Hosei UniversityI don’t know what this is. It is probably not a living organism. In nature, there are crystals.....

137 : Two similar ciliates

Two similarly-shaped ciliates are moving around a particle. The larger one is slim and over 500 microns long, whereas the shorter one is thick an.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe longer of these two ciliates may belong to genus Remanella, and the shorter one may belong.....

138 : Darting quickly

This slender ciliate darts quickly forward and backward, and sometimes changes directions. The cilia surrounding its mouth are highly active. The.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be Uroleptus or a related genus. There are many species in the class Spirot.....

139 : Advancing amoeba

This amoeba, about 70 microns in diameter, moves slowly forward as if gliding on a glass surface. The central part of its body seems to be hard a.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Cochliopodium, most likely to be Cochliopodium actinophorum. ht.....

140 : Ciliates foraging in the same particle

This particle – an aggregate of sand, organic debris and microorganisms – is probably a rich food source, so three different kinds of ciliates bu.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityWe can see three kinds of ciliates in this video. The one that is present from the beginning t.....

141 : Flagellates and ciliates gathering around a food source

Various sizes of flagellates and ciliates are swimming around, and they sometimes enter aggregates containing a variety of foods. One of the larg.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe leading character in this video is Frontonia acuminata. In contrast with other ciliates in.....

142 : Pleuronema sandwiched between algae and particles

Being sandwiched between a long algae and a particle, this Pleuronema ciliate cannot move freely. Only a transparent membranous structure on one .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe velum - lined cilia arranged like curtain – indicates that the organism is probably Pleuro.....

143 : A busy hunter(1)

This slender ciliate 300 microns long is busily looking for food. It repeatedly darts forward and backward, and sometimes changes directions. The.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Uroleptus . http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Uroleptus/inde.....

144 : A pencil-shaped ciliate

This ciliate, with its long, straight body, looks like a pencil that is slightly thicker in the front. There are straight lines running the lengt.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is probably Spirostomum filum. However, it might have been torn at the rear by s.....

145 : A quiet ciliate

A small ciliate in the center of this view is still except for the movement of its cilia. Just as we begin to wonder if it will ever move, it tur.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is certainly a kind of ciliate with a contractile vacuole, but it is difficult t.....

146 : A fast swimmer

This reddish-brown oval ciliate is 200 microns long. It swims so quickly that it is difficult for us to follow its movement. After changing direc.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Nassula because it has a characteristic structure called a cyrtos, and a flat.....

147 : Staurastrum with several ciliates

Several ciliates are swimming around two peculiarly-shaped cells of Staurastrum algae.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThere are many species in this genus, and this may be Staurastrum inflexum. There is a similar.....

148 : A busy hunter　(2)

A slender ciliate 300 microns long busily darts forward and backward as it hunts for food. First it bites a smaller ciliate, but immediately spit.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Uroleptus . http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Uroleptus/inde.....

149 : Division of a small ciliate

A small slender ciliate proceeds slowly while also turning along its axis. The body narrows in the middle, which usually indicates the process of.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is doubtful that this video shows the dividing process, because the cell shape and location.....

150 : A round, dark-red amoeba with a shell

A testate amoeba about 70 microns in diameter extends its pseudopodia all around and moves slowly, carrying a variety of diatoms and several part.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis top-view video shows a testate amoeba belonging to genus Difflugia moving along with its .....

151 : Heliozoea looks like the sun

This roughly spherical organism called Heliozoea is slowly moving. It has many stiff, microtubule-supported projections called axopods radiating .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is certainly a kind of Heliozoea, but it is too small to be determined to the sp.....

152 : Scenedesmus: a colony of four algal cells

Here we see two algal colonies, each composed of four light green cells shaped like pea pods. Each individual cell has one green protoplast in th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is called Scenedesmus acutus f.costulatus. It is characterized by having either .....

153 : A feeble ciliate

This ciliate is about 100 microns long and is shaped like a leaf. The body and surrounding cilia are not moving at all except for a vacuole in th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism must be a living ciliate because its whole body is covered by cilia, and a contr.....

154 : A feeble flagellate

This small oval flagellate vibrates a short flagellum in the front and trails a long flagellum to the rear. Although it waves the front flagellum.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate belongs to the genus Anisonema in the order Euglenales. It is characterized by.....

155 : Diatoms exploring a large aggregate

A large aggregate in the center of this view is composed of bacteria, algal colonies, organic debris and mineral particles. Diatoms of various si.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe diatoms in this video are too small for us to see their surface pattern, which is an impor.....

156 : An active flagellate with two flagella

This round flagellate is about 20 microns in diameter. It has two flagella of similar length at the front and back which it uses to actively swim.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is in the genus Petalomonas, which belongs to Euglena group. http://protist.i.ho.....

157 : A dead diatom ?

This diatom appears to be dead. There are brown particles inside, and small organisms go in and out through various openings in its silicate cell.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe shell is all that remains of a diatom that has died. Because of the large number of speci.....

158 : Struggling to get free

This organism may belong to the group Rotifera. Its slender body reaches 500 microns when fully extended. Since one of the two projections at the.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs Rotifera includes many species, it is difficult to say even to what genus the organism in t.....

159 : Various microorganisms swimming together

At first, one larger and one smaller flagellate swim while connected, and then they separate and go their own ways. Several small organisms and p.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityMany flagellates have two flagella, one of which extends forward and the other backward. The f.....

160 : A ciliate foraging on an aggregate

A slender ciliate 150 microns in length is busily looking for food. Sometimes it goes inside an aggregate, and other times it crawls on the surfa.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe ciliate in this video is shown mainly from the side view, so it is difficult to identify. .....

161 : An amoeba going in and out of an aggregate

This oval amoeba has a slightly stiff body 70 microns long, and extends its numerous pseudopodia in all directions. Usually it is half-hidden ins.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe shape of this amoebae is greatly distorted because it has a lot of food in its cytoplasm......

162 : A flexible flagellate

The body of this slender flagellate is 100 microns long and its single flagellum is about the same length. The organism actively moves among part.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Peranema belonging to the Euglena group, and probably Peranema trichophorum. .....

163 : Microbes in a narrow space among particles

In a narrow space surrounded by particles, various microbes seem to be enjoying their lives. A flat leaf-shaped flagellate swims along, while a t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism that appears at the beginning and very end of this video may belong to a group re.....

164 : Microbes towing aggregates

In this view many aggregates are being pushed or pulled around by an amoeba and some diatoms. We can see an amoeba pulling one particle toward an.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe organism in this video may be Saccamoeba. When amoebas are travelling, other particles of.....

165 : An extremely long ciliate(1)

This dark-brown ciliate is extraordinarily long at more than 1500 microns. It quickly passes through numerous narrow spaces between particles. It.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityJudging from its long cell size and cytostome at the center, this organism is likely to be Spi.....

166 : An extremely long ciliate(２)

This ciliate is similar to ciliate (1) in its extreme length as well as behavior. There are some interesting differences, however. Ciliate (2) ha.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Spirostomum intermedium. As the video was taken using high magnification, we .....

167 : Is this organism going to divide ?

A dark green algal cell remains still at the center of the screen. As the cell is narrow in the middle and includes chloroplasts on both sides, t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Cosmarium scopulorum, and belongs to a family of algae, Desmidaceae. The orga.....

168 : A small amoeba squeezing between small particles

A transparent small amoeba changes it shape to squeeze into a particle. A tiny flagellate and diatoms are swimming around the edges of the screen.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is certainly a naked amoebae (without shell), but, it cannot be identified becau.....

169 : A drifting heliozoa

This heliozoan cell is about 50 microns in diameter. From the cell surface, numerous long axopods of similar length radiate outward. The organism.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a kind of Heliozoa which looks like the sun. Unfortunately it is too small to.....

170 : Two different diatoms stuck together

Two different types of diatoms are stuck to each other and remain still in the middle of the screen. Other kinds of diatoms are moving around in .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityLarge diatoms are rather easy to identify by their shape, but medium-sized and small diatoms (.....

171 : A diatom caught by an unknown filamentous organism

A diatom and a long filamentous organism are stuck together in the middle of the screen. They cannot move freely, whereas other kinds of diatoms .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe swimming organisms in the first half of this video are diatoms. A string-like organism , w.....

172 : A fairly large particle is pushed around by diatoms

Various kinds of diatoms are swimming around this particle, and sometimes bump into it, forcing the particle to move.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThere are a lot of similar-looking small diatoms. Therefore, to identify them by species, it i.....

173 : Ａ flexible flagellate changing its shape

This slender flagellate is 100 microns in length, with a flagellum almost as long at the top. The organism actively moves around swinging its fla.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Peranema belonging to Euglena group. It is probably Peranema trichophorum. ht.....

174 : A rapidly swimming flagellate

This organism covered with a reddish-brown shell may be a flagellate called Trachelomonas. It is swimming around too rapidly for us to clearly se.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to say if this organism is Trachelomonas. The organism in this video is differ.....

175 : A large ciliate twisting its body

This large ciliate is about 300 microns in length. It repeatedly twists its body to squeeze through a narrow space between aggregates. The aggreg.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityFrom the shape of the cell and its dark cytoplasm, this organism looks like it might be Fronto.....

176 : Reversing course

This 70-micron oval flagellate travels in a straight line, and then suddenly reverses course. The organism has two flagella. The shorter one wigg.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Anisonema, most likely Anisonema acinus. http://protist.i.hosei.....

177 : A huge colony of Spirogyra

This algal colony of Spirogyra is so long that it extends beyond the screen. Each individual cell in this long chain has helically arranged chlor.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversitySpirogyra is identified by various features: cell diameter; the number of ribbon-shaped chloro.....

178 : An amoeba rights itself

This small amoeba, about 30 microns long, is lying in a flat position in the center of the screen. Numerous particles can be seen inside its tran.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis video shows how an overturned Cochliopodium rights itself and begin to move again. It is .....

179 : A ciliate with a long neck

This ciliate is about 150 microns and has a slender body that tapers at both ends. The whole body is soft and flat when viewed from the side. The.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to genus Litonotus. Three genera of ciliates, Litonotus, Loxophyllum and .....

180 : An amoeba with an unusual shape

An amoeba about 70 microns in diameter is sitting still. It extends pseudopodia in all directions, but unlike the stiff axopods of Heliozoa, thes.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a testate filose amoeba called Gromia. In this video, only the shell is in fo.....

181 : A ciliate flees to safety

A thin oval ciliate 150 microns long stands still between particles as if it wants to conceal itself. Long surface cilia that extend in all direc.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate is most likely Pleuronema marinum, which is one of the larger species in the genu.....

182 : An amoeba with a strange shape

This small amoeba is deeply dented on one side of the body, and there are pseudopodia-like structures all over the surface. The first part of the.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to say what type of amoeba this is. It might belong to Heliozoa as the cell sh.....

183 : An active amoeba

An amoeba 100 microns in length actively moves using its many slender pseudopodia. In the cytoplasm, we can see a contractile vacuole and numerou.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis is Vexillifera, a comparatively large amoebae. The shape and color of the cell body are s.....

184 : A diatom from a paddy field

The sample was observed immediately after being collected. A large diatom is going in and out of soil aggregates. Small particles are moving insi.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis diatom belongs to genus Surirella, probably Surirella robusta. It is often found in river.....

185 : Four diatom cells from a paddy field

The sample was observed immediately after being collected. Four diatom cells are adhered to each other and standing still. Have they just finishe.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis diatom belongs to the genus Diatoma. After dividing, the two daughter cells don’t separat.....

186 : A Heliozoa from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. When an enl.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAt first it was difficult to identify this organism, but the enlarged high-resolution image al.....

187 : Long, narrow ciliates from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. Two long, n.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate is probably Spirostomum intermedium, within the genus Spirotomum, which includes .....

188 : The test of Arcella

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. Based on th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityFor identification of Arcella to the species level, the side view of its test (shell) must be .....

189 : A flagellate with a surface like an aggregate

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. Being cover.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate may be Peranemopsis granulifera in the Euglena group. http://protist.i.hosei.a.....

190 : A ciliate that looks like a hedgehog

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. The whole b.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate moves actively in the first half but stands still in the latter half of this vide.....

191 : Helizoa, taking a food particle through its axopods

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. A food part.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversitySmall types of Helizoa like this one can be frequently observed, but they do not have any rema.....

192 : Part of cytoplasm extends from the body

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. Helizoa are.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversitySmall types of Helizoa like this one can be frequently observed, but they do not have any rema.....

193 : A colony of small organisms

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. Many small .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThese organisms appear to be a colony of Microcystis composed of small cyanobacterial cells. h.....

194 : A green flagellate with two flagella

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. A green fla.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may belong to genus Lobomonas. http://protist.i.hosei.ac.jp/PDB/Images/Chloroph.....

195 : A flagellate with a rough surface

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. The uneven .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate is Peranemopsis granulifera http://protist.i.hosei.ac.jp/PDB/Images/Mastigopho.....

196 : A mysterious organism

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. At first gl.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityWe cannot identify the organisms in this video; we can only say that numerous small organisms .....

197 : A strange transparent organism

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. The body of.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis unknown organism of about 20-30μm long is covered by a transparent gel. Four seconds afte.....

198 : A tiny helizoa

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. A tiny Heli.....
*Commentary by Prof. Yuji Tsukii, Hosei University The organism moves behind the aggregates is certainly a ciliate but we cannot be sure which t.....

199 : A ciliate resembling a plesiosaur

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. A slender c.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate is Stichotricha in the group of Stichotrichida. http://protist.i.hosei.ac.jp/PDB/.....

200 : An organism in a group of Rotifera

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. The organis.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityBecause the Rotifera group has many species with similar shapes, it is difficult to say even t.....

201 : A nematode from a paddy field

The sample was observed immediately after being taken. This long, huge organism is probably a kind of Nematode because it exhibits the characteri.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis is certainly a Nematode but it cannot be determined to the species level .

202 : A tiny round organism

The sample was observed immediately after being collected. While clinging to soil aggregates, this round greenish organism is continually moving.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism cannot be identified at all. The green color suggests that it contains chlorophy.....

203 : A Euglena from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. Organisms i.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a Euglena, and its shape and way of moving suggests that it may be Euglena vi.....

204 : A diatom from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for a few days. An oblong d.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIdentification of this diatom is difficult because only the girdle face of the cell is shown i.....

205 : Twins from a paddy field?

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for two days. Two cells ar.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism may be Coleps in the process of division. After the division is completed , the .....

206 : Is this green protrusion alive?

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for two days. An unknown g.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to identify this organism with certainty. It may be Oedogonium (filamentous gr.....

207 : Two diatom cells adhereing together

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for two days. Two slender .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityTwo diatom cells are connected side by side. Both cells show the girdle faces and only the rig.....

208 : A fluttering organism

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. A tiny orga.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis green alga probably belongs to either genus Chlamydomonas or Dunaliella. http://protist.i.....

209 : A ciliate looking for food

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. A ciliate q.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate may be either Oxytricha or Amphisiella. http://protist.i.hosei.ac.jp/PDB/Images/C.....

210 : A Chilodonella is swiming around

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. Two Chilodo.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to genus Chilodonella. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophor.....

211 : Is this ciliate gluttonous?

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. This ciliat.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe cell of this ciliate is flat and about 100μm long. The cytostome (mouth) looks like a slit.....

212 : A drifting organism

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. A small and.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is difficult to identify. Its main characteristics are: (a) the body surface cha.....

213 : A Euglena changing its shape

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. At a first .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis video records a Euglena in the process of changing shape. Many species are included in Eu.....

214 : A tiny fluttering organism

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. This tiny o.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is smaller than 20μm long and we cannot determine whether it is a flagellate or .....

215 : An organism with an arrowhead shape

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept for four days. The shape of.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityFrom the way it moves, this organism may be a flagellate. Based on the fact that the hard body.....

216 : A traveling blue-green alga

A traveling blue-green alga The sample was observed immediately after being collected from a paddy field. A blue-green alga, which is composed of.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis blue-green alga belongs to genus Anabaena, probably Anabaena variabilis. http://protist......

217 : A round green organism

The sample was observed immediately after being collected from a paddy field. In this green spherical organism, the cytoplasm with a red spot is .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt cannot be determined exactly what this organism is. However, the cytoplasm is continually m.....

218 : A light brown diatom

The sample was observed immediately after being collected from a paddy field. A light brown diatom is threading its way through soil particles. W.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis diatom belongs to genus Pinnularia. When it glides on a surface, it usually shows the to.....

219 : A diatom with particles inside

The sample was observed immediately after being collected from a paddy field. A diatom is traveling slowly through soil aggregates. Inside the ce.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a diatom belonging to genus Surirella. When diatoms glide, they usually show.....

220 : Spirogyra like glass artwork

The sample was observed immediately after being collected from a paddy field. Spirogyra is a green alga that is composed of long, transparent cel.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Spirogyra. http://protist.i.hosei.ac.jp/PDB/Images/Chlorophyta/Spirogyra/ind.....

221 : A ciliate from a paddy field

The sample was observed immediately after being collected from a paddy field. The ciliate changes its flexible body to pass through obstacles. Th.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to genus Frontonia. http://protist.i.hosei.ac.jp/PDB/Images/Ciliophora/Fr.....

222 : Diatom from a paddy field

The sample was observed immediately after being collected from a paddy field. A diatom cell is slowly threading its way through obstacles.
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis diatom belongs to genus Pinnularia. When it glides on a surface, it usually shows the to.....

223 : Diatom from a paddy field

The sample was observed immediately after being collected from a paddy field. A diatom cell is slowly threading its way through obstacles. Withou.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis diatom belongs to genus Pinnularia. When it glides on a surface, it usually shows the to.....

224 : Amoeba from a paddy field

The sample was observed immediately after being collected from a paddy field. As the body of this amoeba is completely transparent, it is difficu.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a kind of naked amoeba. To identify naked amoebae, it is necessary to know ho.....

225 : An oval green organism

The sample was observed immediately after being collected from a paddy field. An organism suddenly appears and gets stuck to a large aggregate. I.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityAs the oval shape does not change even during the struggle, a shell probably surrounds this or.....

226 : A spiny green organism

The sample was observed immediately after being collected from a paddy field. The whole surface of this green organism is covered with spines. W.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a type of Euglena with a lorica (shell), probably Trachelomonas crispa or a r.....

227 : Amoeba from a paddy field

After being collected from a paddy field, this sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis naked amoeba belongs to genus Glaeseria. http://protist.i.hosei.ac.jp/PDB/Images/Sarcodin.....

228 : Euglena from a paddy field

After being collected from a paddy field, the sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to genus Euglena. http://protist.i.hosei.ac.jp/PDB/Images/Mastigophora/E.....

229 : A diatom cell and surrounding bacteria

After being collected from a paddy field, the sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis diatom belongs to genus Pinnularia. http://protist.i.hosei.ac.jp/PDB/Images/Heterokontoph.....

230 : A ciliate from a paddy field

After being collected from a paddy field, the sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to order Stichotrichida. http://protist.i.hosei.ac.jp/taxonomy/Ciliophora.....

231 : Is this ciliate going to divide?

After being collected from a paddy field, the sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to order Stichotrichida. http://protist.i.hosei.ac.jp/taxonomy/Ciliophora.....

232 : A ciliate is going to divide

After being collected from a paddy field, the sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to order Stichotrichida. http://protist.i.hosei.ac.jp/taxonomy/Ciliophora.....

233 : A ciliate from a paddy field

After being collected from a paddy field, the sample was put on DNB agar plate (diluted nutrient broth with agar) with a drop of distilled water,.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to genus Urostyla in order Stichotrichida. http://protist.i.hosei.ac.jp/P.....

234 : Arcella from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept in the dark for 4 days. In .....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis large amoeba with a disk-shaped shell (test) and thick pseudopodia is a testate amoeba ca.....

235 : A flagellate from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept in the dark for 4 days. A g.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Trachelomonas crispa or a related species. One of the features of Trachelomon.....

236 : A flagellate from a paddy field

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept in the dark for 4 days. A f.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is Peranemopsis granulifera in the Euglena group. It is characterized by one fla.....

237 : The test of Arcella

After being collected from a paddy field, the sample was put on 1% agar plate with a drop of distilled water and kept in the dark for 4 days. Sad.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is definitely Arcella gibbosa. http://protist.i.hosei.ac.jp/PDB/Images/Sarcodina.....

238 : 2006Botanical Garden in Aobayama I

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a ciliate that is too small to be identified. Its cell shape is uneven in the.....

239 : 2006Botanical Garden in Aobayama2006 II

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism seems at first to be a testate amoeba, but since the outline of the cytoplasm in.....

240 : 2006Protozoa from the Tohoku University Botanical Garden in Aobayam III

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate belongs to the Stichotrichida group, and its shape resembles that of genus Amphis.....

241 : 2006Botanical Garden in Aobayama IV

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism is a type of amoeba called Vannella miroides. Its flexible shape allows it to ma.....

242 : 2006Botanical Garden in Aobayama V

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityIt is difficult to identify this small ciliate because neither the shape of the cell body nor .....

243 : 2006Botanical Garden in Aobayama VI

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis organism belongs to Helizoa, but the image is too small to determine the genus. We cannot.....

244 : 2006Botanical Garden in AobayamaVII

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThe cell of this cylindrical organism is slightly tapered at the front end and rounder at the .....

245 : 2006Botanical Garden in AobayamaVIII

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis flagellate may be genus Cercomonas or a relatad genera. It has two frontal flagella, one.....

246 : 2006Botanical Garden in Aobayama IX

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate has a long tapered mouth at the front, and a contracting vacuole at the rear end......

247 : 2006Botanical Garden in Aobayama X

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from t.....
*Commentary by Prof. Yuji Tsukii, Hosei UniversityThis ciliate resembles the one collected from the H layer that is shown in video "Botanical Ga.....