« Back to the Antarctic sea urchin (Sterechinus neumayeri)
The edible or common sea urchin (Echinus esculentus) has a large, rounded 'shell', which is actually an external skeleton, correctly called…
More about the edible sea urchin »
The purple sea urchin is an aptly named species, easily identified by the strikingly vivid, purple spines that project from its rounded body…
More about the purple sea urchin »
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