David Fleetham / Patterns of diffused sunlight on Humpback whale (Megaptera novaeangliae), Hawaii.

David Fleetham / Curious Humpback whale calf (Megaptera novaeangliae) during moment away from its mother, Hawaii.

David Fleetham / Schooling Lemon / Milletseed butterflyfish (Chaetodon miliaris) below kayakers off Maui, Hawaii.

David Fleetham / Lemon sharks (Negaprion brevirostris) viewed from below. West End, Grand Bahamas, Caribbean.

David Fleetham / Lemon shark (Negaprion brevirostris) viewed from below. West End, Grand Bahamas, Caribbean.

David Fleetham / Schooling Lemon butterflyfish (Chaetodon miliaris) near to surface. Maui, Hawaii.

David Fleetham / Looking upwards to schooling Lemon butterflyfish (Chaetodon miliaris) near to surface. Maui, Hawaii.

David Fleetham / Florida manatee (Trichechus manatus latirostris) at Three Sisters Spring in Crystal River, Florida, USA.

David Fleetham / Marine iguana (Amblyrhynchus cristatus) emerging from ocean into Mangroves (Rhizophoraceae). Santa Cruz Island, Galapagos, Ecuador.

David Fleetham / False killer whale (Pseudorca crassidens) just below surface exhaling as it breaks the surface. Maui, Hawaii.

David Fleetham / Tiny Whitespotted bamboo shark (Chiloscyllium plagiosum) formed inside egg casing, Philippines.

David Fleetham / Mouth of the worlds largest fish, the Whale shark (Rhincodon typus), Donsol, Philippines.