Home > Invertebrates > Sea Urchins > Diadema sp. 1

Family Diadematidae

HAWAII

Diadema sp. 1

Midway Harbor, 10 feet

Stegopontonia commensalis

UNIDENTIFIED LONG-SPINED URCHIN

One of two individuals in Midway Harbor.  Also observed from submersibles in the NWHI.  Has short, thin venomous spines protected by large primary spines.  Overall diameter of 8 inches.