Home > Invertebrates > Sea Urchins > Rhynobrissus hemiasteroides

Created 9/26/2013

Family Brissidae

HAWAII

Rhynobrissus hemiasteroides

 

Puu Kala Point, Kona, Hawaii, 60 feet



Dead, Puako, Hawaii, 15 feet

HALF-STAR HEART URCHIN

Uncommon in sand at any depth.  Inflated, lacking dorsal ridge, petals bordered by a pentagonal groove.  Attains at least 2 inches.  Hawaii to NW Australia.

Test images