Heliocidaris crassispina A. Agassiz 1863 (formerly Anthocidaris crassispina)
Family: Echinometridae	Order: Echinoida
Locality: Nagasakibana beach (The Pacific), Nagasaki, Chosi, Chiba, Japan, rocky tidal zone	Dimensions:about 84 mm over spines
Japanese name: Murasaki-uni