starfish & related organisms library

 

Echinoderms are spiny marine animals such as starfish and sea urchins. Most echinoderms have small jaws, a water-vascular system and tube feet.

Featured Article:  Sand Dollar

Sand Dollar, a small disc-shaped marine animal closely related to the sea urchin. See more »

Echinoderms

Echinoderms

Echinoderm, a member of a large group (phylum) of spiny-skinned marine animals, including starfish, sea urchins, and sea cucumbers.

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Sea Cucumber

Sea Cucumber

Sea Cucumber, a marine animal, shaped like a cucumber or sausage, related to the starfish and the sea urchin.

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Sea Urchin

Sea Urchin

Sea Urchin, a prickly-looking marine animal, spherical in shape and covered with long movable spines.

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Starfish

Starfish

Starfish, or Sea Star, a bottom-dwelling marine animal. Despite its name, the starfish is not a fish; it is an echinoderm, a type of marine animal that is spiny-skinned.

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Brittle Star

Brittle Star, a marine animal related to the starfish, sea cucumber, sea urchin, and sand dollar.

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Crinoid

Crinoid, or, any member of a class of colorful, plantlike sea animals related to the starfish.

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Sand Dollar

Sand Dollar, a small disc-shaped marine animal closely related to the sea urchin.

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