Preview Hawaii, slate pencil urchin, (heterocentrotus mammillatus). Image ID: 1116-29017 Artist: Dave Fleetham Purchase a commercial license Buy framed prints & more from our print store animal art blue bright center circular close up close up closeup colorful coral creature detail hawaii heterocentrotus mammillata mammillatus marine life ocean open organism pattern pencil pointed red sea life sealife art sharp sky slate species spike spine tropical undersea underwater art urchin