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Strongylocentrotus purpuratus (Purple sea urchin)
Copyright ©
2005 Mary Jo Adams
Pictured
is the underside of a purple sea urchin. Note the length of
the spines in proportion to the size of the test.
In this species, the spines are relatively short and stout; their
length is about one third the diameter of the animal's test (shell).
This page was created by Mary Jo Adams on 12/7/05.
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