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Vorticella ciliates on red algae, light microscopy

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KARL GAFF / SCIENCE PHOTO LIBRARY KARL GAFF / SCIENCE PHOTO LIBRARY

Caption

Vorticella ciliates on red algae, light microscopy footage. Colony of vorticella anchored on a filament of red algae from a marine rock pool. These are ciliate protozoa, so-called because the bell-shaped heads have tiny, hair-like structures (cilia) which are moved in a waving motion to waft food towards them from the surrounding fluid. The cilia can also be used for movement. Each head is attached to a stalk which the vorticella uses to secure itself to an anchor-point. The vorticellae seen here are in an extended position for feeding. When the creature is disturbed it can contract the stalk for protection.

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  • Duration: 00:00:08.22
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