Diadema savignyi (Audouin 1809)

South Pacific Ocean, Shot at night, Duration 15 seconds

South Pacific Ocean, Shot at night, Duration 11 seconds

Diadema savignyi is not the primary subject of the video clip; the primary subject is Ostorhinchus hoevenii (Frostfin cardinalfish). Indo-Pacific, Schooling, Duration 19 seconds

Diadema savignyi is not the primary subject of the video clip; the primary subject is Ostorhinchus hoevenii (Frostfin cardinalfish). Indo-Pacific, Duration 15 seconds

Coral Sea, Duration 7 seconds