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Sea Urchin -
Slate-pencil sea urchin (Goniocidaris tubaria) -
Green Sea Urchin - Strongylocentrotus droebachiensis -
Pencil Urchin - Plococidaris verticillata -
Sea Urchin - Parasalenia gratiosa -
Sea Urchin - Pseudoboletia maculata -
Pencil Urchin - Prionocidaris baculosa -
Alien!!! -
Banded Sea Urchin - Echinothrix calamaris -
Magnificent Fire Urchin - Asthenosom varium -
Diadema sp Sea Urchin -
I ain't heavy, I'm your Protector! -
Collector Urchin - Tripneustes gratilla -
Green Sea Urchin - Strongylocentrotus droebachiensis -
Burrowing Fine Spine Urchin - Echinostrephus molaris -
Flower Urchin - check out my decorations! -
Needle Home -
Sea Urchin - Diadema savignyi -
Slate-pencil urchin (Goniocidaris tubaria) -
Rock-Boring Urchin - Echinometra mathaei -
Green Sea Urchin - Strongylocentrotus droebachiensis -
Cake Urchin - Tripneustes gratilla