Home > Invertebrates > Sea Urchins > Echinothrix diadema

Updated 8/8/2013

Family Diadematidae

HAWAII

Echinothrix diadema

Kahe Point, O‘ahu, 15 feet

 

Kaiwi Point, Hawaii, 4 feet

Juvenile, Kaunolu Bay tidepool, Lana'i

 

Kahe Point, O‘ahu, 15 feet

Spawning, Makapu‘u tidepool, O‘ahu

 

Makapu‘u tidepool, O‘ahu

Spawning, Ft. Kamehameha, O‘ahu, 3 feet

 

 

Juvenile, Makapu‘u tidepool, O‘ahu

 

cropped

Sea Cave, O‘ahu, 35 feet

 

Kahuku, O‘ahu

Makapu‘u Pinnacle, O‘ahu, 20 feet

 

Juvenile, Lana'i Lookout, Oahu, 15 feet


Juvenile, Kaunolu tidepool, Lana'i

BLUE-BLACK URCHIN    WANA

Common in very shallow water exposed to wave action.  Stout blue-black primary spines protect venomous secondary spines which are banded with yellow and black, primary spines of juveniles banded.  Test diameter and spine length each attain 4 inches.  Gonads are delicacy.  Hawaii & the Indo-Pacific.