Sea Stars, Sea Urchins and Related Animals

Echinoderms are a group of closely related animals that includes starfish, brittlestars, featherstars, sea urchins and sea cucumbers; "echinoderm" means literally "spiny skin". These highly evolved invertebrates are unique in possessing "pentaradiate" or five-part symmetry as adults, an hydraulic water vascular system that aids in locomotion, and a remarkable ability to regenerate lost body parts.

Sea Star Solomon Islands	Sea Cucumber Indonesia	Sea Star Indonesia
Basketstar British Columbia	Brittlestar St. Vincent	Basketstars Tasmania
Sea star Tasmania	Sea stars Tasmania	Sea star Tasmania
Sea star Tasmania	Sea star British Columbia	Sea star British Columbia
Sea stars British Columbia	Sea Urchin Indonesia	Sea star British Columbia

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All images © David Hall. Any unauthorized use or reproduction of these images is strictly forbidden.