- 1 Sea star or starfish (Asteroidea)
- 2 Brittle stars, basket stars, serpent stars (Ophiuroidea)
- 3 Sea urchins, heart urchins, and sanddollars (Echinoidea)
- 4 Holothurians or sea cucumbers (Holothuroidea)
- 5 Feather stars and sea lilies (Crinoidea)
Thursday, June 6, 2013
What are echinoderms?
There are 5 classes in the phylum echinodermata. Echinodermata, to begin with, means "spiny-skinned" in Latin.
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