Video clips

Amoeba 1

Amoeba 1
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Amoeba proteus - The outstanding example of a potentially immortal unicellular organism. It changes its shape continuously.

What at first sight seems to be a chaotic, aimleesly swelling movement turns out to be the formation of lobopodia. Responding to a chemical stimulus it uses chemotaxis to catch its prey, enclose it and ingest it in a food vacuole.

Amoeba 2

Amoeba 2
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Amoeba (Chaos diffluens) - Cyclosis in a pseudopod (magnification of 1000 times).

Viscous, transparent plasm is streaming, followed first by more liquid, granular plasm and then by the nucleus, food vacuoles with ingested food particles, and food-storing crystals.

Amoeba 3

Amoeba 3
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Arcella gibbosa - Shell-forming Amoeba (taken laterally).

The soft plasm body is attached to the protecting cupola by plasm strings. Lobopodia are extended through a circular opening on the underside.

Amoeba 4

Amoeba 4
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Arcella gibbosa - The circular shell with hexagonal pattern (in top view) showing a young, still transparent specimen (with inclusion of diatom).

Gas bubbles can be produced or sucked in to keep balancing in water.