6 examples of echinoderms

Echinoderms are a diverse group of marine animals known for their radial symmetry and unique water vascular system. Six examples of echinoderms include starfish (or sea stars), sea urchins, sand dollars, sea cucumbers, brittle stars, and crinoids (or feather stars). These organisms play important roles in marine ecosystems, contributing to the health of coral reefs and ocean floors. Their fascinating Biology and varied forms make them a significant subject of study in marine biology.