Colobocentrotus_atratus
Colobocentrotus atratus
Species of sea urchin
Colobocentrotus atratus, commonly named the helmet urchin or shingle urchin, is a species of sea urchin in the family Echinometridae.[1] In Hawaii, it is called hāʻukeʻuke. It is found on wave-swept intertidal shores in the Indo-West Pacific, particularly on the shores of Hawaii.