Echinoderms (Phylum Echinodermata) are a phylum of marine animals. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone.
Echinoderms. Phylum: Echinodermata. Echinoderms have a few important aspects in common. They have bony ossicles in their body. They have a water-vascular system which pumps water ...