This species of brittlestar (Astroporpa annulata) is related to basketstars and lives clinging to soft corals. The white rings are made up of tiny hooklike spines to help it hang on and capture food. Image courtesy of Project Oceanica.
Cookie likey - blue sea sponge is a dead ringer for the cookie mon
Cookie monster is that you? This familiar face is actually that of a sea sponge. The resemblance is uncanny!
Finding Nemo: do one wall as if in the ocean
Biscuit Seastar (Tosia australis) Saspotato on Flickr