GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Salps. Spiral colony of salps (Pegea socia). Salps are tunicate organisms related to sea squirts. They are filter feeders, sifting microscopic plankton from the water. The chains can reach lengths of over 25 metres, although they are easily broken. Each individual can reach a length of around 12 centimetres. Pegea socia is found in tropical and temperate waters.
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