This sea urchin, approximately 8 cm in diameter was attached to a rock in shallow water and was releasing strand-like clouds of milky whiteness, presumably for reproduction.
Ngerchong Outside, Koror, Palau
ヨツアナカシパン. means four hole sand dollar. (four holes on center)
Walking the shores of a small island off Vancouver Island, British Columbia. At low tide it is amazing the sea life you come across. (aka star fish)
About 20m deep in a cave
Sea cucumber from the Synaptidae
Echinoderms (Phylum Echinodermata from Greek, ἐχῖνος, echinos – "hedgehog" und δέρμα, derma – "skin") are a phylum of marine animals. The adults are recognizable by their (usually five-point) radial symmetry, and include such well-known animals as starfish, sea urchins, sand dollars, and sea cucumbers. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7000 living species, making it the second-largest grouping of deuterostomes (a superphylum), after...