David Fleetham / Schooling Raccoon butterflyfish (Chaetodon lunula) framed in a lava formation off the island of Lanai, Hawaii.

David Fleetham / Schooling Raccoon butterflyfish (Chaetodon lunula) framed in a lava formation off the island of Lanai, Hawaii.

Georgette Douwma / Coral reef scenery with a pair of Red Sea raccoon butterflyfish (Chaetodon fasciatus), Pygmy sweepers (Parapriacanthus guentheri) and soft corals (Dendronephthya sp) Egypt, Red Sea.

David Fleetham / Diver looking at underwater fish identification chart in front of schooling Raccoon butterflyfish (Chaetodon lunula) and a lava formation. Lanai, Hawaii. July 2012. Model released.

Richard Robinson / Chaetodon lunula Raccoon Butterflyfish (Chaetodon lunula) at South Minerva Reef / Teleki Tonga, a disputed territory in the South Pacific between Tonga and Fiji.

David Fleetham / Five images of schooling Raccoon Butterflyfish (Chaetodon lunula) digitally combined for this panorama photograph. Lanai, Hawaii.

David Fleetham / Schooling Raccoon Butterflyfish (Chaetodon lunula) beneath the coastline of West Maui. Five images were combined digitally to create this split scene. Hawaii.

David Fleetham / Schooling Raccoon Butterflyfish (Chaetodon lunula) and a Whitetip Reef Shark (Triaenodon obesus). Lanai, Hawaii. Several images were digitally combined to create this panorama.

David Fleetham / Schooling Raccoon Butterflyfish (Chaetodon lunula) on reef. Lanai, Hawaii. Four images were digitally combined for this panorama photograph.

David Fleetham / A pair of Green Sea Turtles (Chelonia mydas) swimming through a school of Raccoon Butterflyfish (Chaetodon lunula) and Bluestripe Snapper (Lutjanus kasmira). Hawaii. Three images were digitally combin...

Linda Pitkin / Red Sea raccoon butterflyfish (Chaetodon fasciatus), on coral reef, Beacon Rock reef, Strait of Gubal, Gulf of Suez, Egypt, Red Sea.

Linda Pitkin / Red Sea raccoon butterflyfish (Chaetodon fasciatus) Ras Katy, Gulf of Aqaba, Egypt, Red Sea.