Banded/Double-spined Sea Urchin
Size up to 20 cm. Darkspherical body with a blue star-shaped pattern. Long, white-ended banded spines and short venomous reddish spines in the center and in between the long ones. Seen in the Cement Wreck in Lankayan Island, Sabah (Borneo).
''Echinothrix calamaris'', known commonly as the banded sea urchin or double spined urchin among other vernacular names, is a species of sea urchin in the family Diadematidae.