Home > Invertebrates > Sea Urchins > Diadema sp. 1

Updated 11/22/2012

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.  Test diameter of 3 inches.  Compare with Diadema sp. 2.