ChaetodiademaChaetodiadema is a genus of sea urchins of the Family Diadematidae. Their armour is covered with spines.List of speciesFollowing World Register of Marine Species: Chaetodiadema africanum H.L. Clark, 1924 -- South AfricaChaetodiadema granulatum Mortensen, 1903 -- Indo-west PacificChaetodiadema japonicum Mortensen, 1904 -- JapanChaetodiadema keiense Mortensen, 1939 -- Kei islandsChaetodiadema pallidum A. Agassiz & H.L. Clark, 1907 -- HawaiiChaetodiadema tuberculatum H.L. Clark, 1909 -- South Australia