Echinodermata - sea stars, sea urchins, sea cucumbers, and relatives

Echinodermata - sea stars, sea urchins, sea cucumbers, and relatives,
By Renee Sherman Mulcrone,
Animal Diversity Web,
University of Michigan Museum of Zoology,

Visit the website for photos (click for enlargement) and to learn about its habitat, lifespan, behavior, food habits, economic (positive & negative) importance, and its role in the ecosystem.