Ciliates have hair-like cilia that are used for locomotion as well as for feeding. They can be found in many shapes and sizes. Stentor couruleus (top) attaches to a substrate but is also capable of swimming. The green Paramecium bursaria contains symbiotic algae. Other ciliates like this Paruroleptus have grouped cilia (cirri) that act as little feet.
There are also ciliates that form branching colonies and ciliates that don't look like ciliates. You can see them in the marine organisms portrait.
Find out more about ciliates in: The smallest page on the web
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