Echinoderms (Echinodermata)

 

 

Echinoderms (Echinodermata) are a phylum of marine invertebrates with ca. 7,000 living species. It includes sea stars (Asteroidea), brittle stars (Ophiuroidea), sea urchins (Echinoidea), sea cucumbers (Holothuroidea), and sea lilies (Crinoidea).

 

		Sea Stars (Asteroidea)
		Sea Urchins (Echinoidea)
		Sea Cucumbers (Holothuroidea)

 

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