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

David Hall / Waves breaking on volcanic rocks with schooling Green jacks (Caranx caballus), Barred flagtails (Kuhlia mugil) and a single Black jack (Caranx lugubris), Revillagigedo Islands, Mexico, Pacific Ocean.

David Hall / Waves breaking on volcanic rocks with schooling Green jacks (Caranx caballus) and Barred flagtails (Kuhlia mugil) with Black durgons (Melichthys niger) and Redtail triggerfish (Xanthichthys mento), Re...

David Hall / Waves breaking on volcanic rocks with schooling Green jacks (Caranx caballus), Barred flagtails (Kuhlia mugil) with Black durgons (Melichthys niger) and Redtail triggerfish (Xanthichthys mento), Revil...

David Hall / Large wave breaking on volcanic rocks with schooling Barred flagtails (Kuhlia mugil), Revillagigedo Islands, Mexico, Pacific Ocean.

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