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Archived – Green sea urchins
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Green sea urchins (Strongylocentrotus droebachiensis) are members of the phylum Echinodermata, which includes sea stars and sea cucumbers. On the Pacific coast of North America they are found from Alaska to northern Washington State, generally in intertidal locations and to depths of more than 140 metres. Green urchins tend to have rather patchy distributions, and appear to be more mobile than the red sea urchin (S. franciscanus), with which they are often found. Green urchins may make seasonal migrations between deep and shallow water depths.
