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Project Noah Nature School
Strongylocentrotus purpuratus, Purple Sea Urchin
The sea urchin is an echinoderm, a type of marine animal that is typically several centimeters in length and has pentamerous radial symmetry. Pentamerous radial symmetry refers to a body with five equal parts originating from a center point.
The purple sea urchin (Strongylocentrotus purpuratus) is found in the Pacific Ocean ranging from Alaska to Cedros Island in Baja California
Spotted on May 26, 2011
Submitted on May 26, 2011
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