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Strongylocentrotus spp. (Red and purple sea urchins)
Copyright © 2005
Mary Jo Adams
The
large urchin in the center of the photo is the red urchin (Strongylocentrotus
franciscanus). The smaller urchins are purple urchins
(S. purpuratus). Note that the spines of the red
urchin are much longer in proportion to the size of the test (shell).
This page was created by Mary Jo Adams on 12/7/05.
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