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Purple and black sea urchins on a rocky reef, Strongylocentrotus purpuratus, Santa Barbara Island,...
Purple and black sea urchins on a rocky reef. Purple Urchin photo. Strongylocentrotus purpuratus photograph. Photograph #10142 by Phillip Colla /...
santa barbara islandblack searocky reefstrongylocentrotus purpuratuspurple