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Sea urchins up close are i n t e n s e
The living surface of a sea urchin is a jungle of overlapping spines, intertwined tube-feet and plentiful pedicellariae—three-toothed jaws on movable stalks ready to pounce and pinch. Expertly equipped for battle from above and below, sea urchins are formidable foes of the kelp forest.
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