Echinoderm

Phylum of marine invertebrates with radial symmetry.

echinodermata

A phylum of marine invertebrates characterized by radial symmetry (often pentaradial), a water vascular system, and a spiny or bumpy surface. Examples include starfish, sea urchins, sand dollars, and sea cucumbers.

/ˌɛkɪˈnɔːrdərm/

From Greek ekhinos (hedgehog) and derma (skin).

Echinoderms are cool sea creatures like starfish and sea urchins that have a unique body plan with sections arranged around a central point.

animal invertebrate

starfish sea urchin sand dollar sea cucumber

animal kingdom marine ecosystem

animal marine animal