GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Crinoid, or featherstar, on whip coral. Crinoids feed by filtering food particles from the water using their feathery arms, the hairs of which pass food to a central mouth. They inhabit shallow and deep waters across the world's oceans. Photographed off Bali, Indonesia.
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