David Fleetham / Hawaiian Flagtails (Kuhlia xenura) schooling with clouds a sky visible beyond the surface. Lanai, Hawaii.

Doug Perrine / Reef manta ray (Manta alfredi) feeding on plankton attracted by light at night, among schooling Hawaiian flagtail (Kuhlia xenura) akako Bay, Keahole, Kona, Hawaii. August.

Doug Perrine / Reef manta ray (Manta alfredi) feeding on plankton attracted by light at night, among schooling Hawaiian flagtail (Kuhlia xenura) akako Bay, Keahole, Kona, Hawaii. August.

Doug Perrine / Zebra-head flagtail (Kuhlia sandvicensis) portrait, Honolulu, Oahu, Hawaii, USA. Captive.

Doug Perrine / Hawaiian flagtails (Kuhlia xenura), juveniles, schooling beneath Kailua Pier, Kamakahonu Bay, Hawaii, Pacific Ocean.