PETER SCOONES / SCIENCE PHOTO LIBRARY PETER SCOONES / SCIENCE PHOTO LIBRARY
Ink-spot sea squirts (Polycarpa aurata) on a coral reef. Sea squirts are primitive sessile animals with tubular bodies. They feed by circulating water through their bodies, filtering out plankton. Ink-spot sea squirts, which can reach 15 centimetres in length, are found in the Indo-Pacific region on coral reefs. Filmed at Raja Ampat, West Papua, Indonesia.
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