Florent's Guide To The

Hawaii Reefs

Blue-Black Urchin
Blue-Black Urchin
Scientific Name: Echinothrix diadema
Class: Echinoidea
Category: Sea Urchins
Size: 4 to 8 in. (10 to 20 cm)  
Depth: 3-30 ft. (1-10 m)
Distribution: Indo-Pacific, Hawaii

Invertebrates
Echinoderms
Sea Urchins

Blue-Black Urchin

Collector Urchin

Pebble Collector Urchin

Pale Rock-Boring Urchin

Oblong Sea Urchin

Needle-spined Urchin

Shingle Sea Urchin

Red Slate Pencil Urchin

Rough-Spined Urchin

Banded Urchin

Radiant Sea Urchin

Radiant Sea Urchin (Juvenile)

Sea Stars
Sea Cucumbers


All Photographs
© 2004-2016 Florent Charpin