Green Sea Urchin (Strongylocentrotus droebachiensis) A close up of a Green Urchin photographed while scuba diving in British Columbia, Canada. Often harvested for uni ...
A sunflower sea star may be about to snack on some sea urchins in California. Brent Durand/Moment via Getty Images Before 2013, divers on North America’s west coast rarely saw purple sea urchins. The ...
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