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Purple Sea Urchin


Purple spines, ~1.5 inches in diameter without the spines.


Tide pool/intertidal zone.


The final picture shows the test of a dead sea urchin. You can see its radial symmetry indicated by the dark bands encompassing the test (ambulacra). Those bands are where rows of tube feet were located.

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Spotted by

Guanacaste, Costa Rica

Spotted on Jan 8, 2011
Submitted on Feb 26, 2011

Spotted for Mission

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