ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Giant sea cucumber (Thelenota anax) on the seabed. This sea cucumber is also known as the amberfish. The sea cucumber is an echinoderm, related to starfish and sea urchins. It is found in the Indo-Pacific region on sandy seabeds at depths between 12 and 30 metres. It feeds on detritus from the sea floor using tube feet around its mouth. When startled by predators it confuses them by expelling its internal organs, which it then regrows. This sea cucumber can reach 1 metre in length and weigh over 5 kilograms. Photographed in the Red Sea.
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