The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species: 600
Crinoids are ancient marine animals belonging to the echinoderm group, related to starfish and sea urchins. They include feather stars and sea lilies, found in oceans worldwide from shallow reefs to deep-sea environments. With their many feathery arms, crinoids capture plankton and organic particles from the water. Some species are free-moving, while others remain attached to the seafloor by a stalk.