Home > Invertebrates > Sea Urchins > Echinometra oblonga

Updated 2/17/2023

Family Echinometridae

INDO-WEST PACIFIC / HAWAII

Echinometra oblonga

Puako, Hawaii, 20 feet

 

With parasitic Vexilla snail, Makapu'u, Oahu

Makapu'u tidepool, Oahu

 

Kuki'o, Hawaii
   

BLACK ROCK-BORING URCHIN

Common in crevices in very shallow water.  Always purple-black.  Spines are strong but not sharp.  Attains overall diameter of 3 inches.  East Africa to Okinawa, Hawaii, and Pitcairn.