Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) swimming close to surface. Brothers Islands, Egypt.

David Fleetham / Whitetip reef shark (Triaenodon obesus) resting on sea floor. Kauai, Hawaii.

Alex Mustard / Whitetip shark (Carcharhinus longimanus) head on beneath the surface. Rocky Island, Egypt. Red Sea

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands, Egy...

Norbert Wu / Oceanic White-tip Shark (Carcharhinus longimanus) with Pilot Fish (Naucrates ductor), Bahamas, Caribbean

Jeff Rotman / Whitetip reef sharks (Triaenodon obesus) pack silhouetted following scent trail in water column, Cocos Island, Costa Rica, Pacific Ocean

Juergen Freund / Whitetip reef shark (Triaenodon obesus) at reef, West New Britain, Papua New Guinea.

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) silhouetted against the sun, Cat Island, Bahamas, Atlantic Ocean

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) with Pilot fish (Naucrates ductor). Tropical West Atlantic Ocean, off Cat Island, Bahamas.

Jeff Rotman / Whitetip Reef sharks (Triaenodon obesus) following scent trail in water column, Cocos Island, Costa Rica, Pacific Ocean.

Jeff Rotman / Whitetip Reef Sharks (Triaenodon obesus) following scent trail in water column, Cocos Island, Costa Rica, Pacific Ocean.

Fred Bavendam / White-tipped Soldierfish (Myripristis vittata) school, Nusa Penida, Indonesia

Rolf Nussbaumer / Purple-bibbed Whitetip (Urosticte benjamini) male feeding from flower, Mindo, Ecuador, Andes, South America, January

Juergen Freund / Whitetip reef shark (Triaenodon obesus) and Grey reef sharks (Carcharhinus amblyrhynchos) at North Horn, Queensland, Australia

Doug Perrine / Oceanic whitetip shark (Carcharhinus longimanus) with pilot fish (Naucrates ductor) Kona Coast, Hawaii, Central Pacific Ocean

Michael Pitts / Oceanic whitetip shark {Carcharhinus longimanus} and Pilotfish {Naucrates ductor} Red Sea.

Doug Perrine / Oceanic whitetip shark {Carcharhinus longimanus} Hawaii, Pacific Ocean.

Michael Pitts / Oceanic whitetip shark {Carcharhinus longimanus} + Pilotfish {Naucrates ductor} Red Sea.

Michael Pitts / Oceanic whitetip shark {Carcharhinus longimanus} + Pilotfish {Naucrates ductor} Red Sea.

Flip Nicklin / Sandbar Shark (Carcharhinus plumbeus) underwater portrait, bottom-dwelling coastal species, worldwide distribution

Flip Nicklin / Oceanic White-tip Shark (Carcharhinus longimanus) underwater portrait, North America

Pete Oxford / Whitetip reef sharks {Triaenodon obesus} in shallows near shore, Bartolome Is, Galapagos

Jeff Rotman / Whitetip reef shark "Adéle" close-up of head {Triaenodon obesus} Cocos Island, Costa Rica, Pacific Ocean

Jeff Rotman / Whitetip reef shark pack hunting at night {Triaenodon obesus} Cocos Is, Costa Rica, Pacific Ocean

Jeff Rotman / Whitetip reef sharks hunt Surgeonfish over coral at night {Triaenodon obesus} Cocos Is, Pacific Ocean

Jeff Rotman / Whitetip reef shark {Triaenodon obesus} feeding on Surgeonfish at night. Cocos Is, Pacific Oceqn off Costa Rica

Jeff Rotman / Eye of Whitetip reef shark {Triaendodon obesus} Red Sea, Egypt

Pascal Kobeh / White tip shark (Triaenodon obesus) laying on the sandy bottom, New Caledonia, Pacific Ocean.

Gary Bell/ Oceanwide / White-tip Reef Shark (Triaenodon obesus), Heron Island, Great Barrier Reef, Queensland, Australia

Pascal Kobeh / Close-up of the head of a White tip shark (Triaenodon obesus) laying on the bottom with a Remora (Echeneis naucrates) on its head, Sulu sea, Philippines

John Shaw / Purple-bibbed whitetip hummingbird (Urosticte benjamini) feeding at flower. Ecuador, May.

Nick Hawkins / Whitetip reef shark (Triaenodon obesus) resting during daytime on sea floor. Near Cocos Island National Park, Costa Rica.

Nick Hawkins / Whitetip reef shark (Triaenodon obesus) resting during daytime on sea floor. Cocos Island National Park, Costa Rica.

Georgette Douwma / White-tipped soldierfish (Myripristis vittata). North Sulawesi, Indonesia.

Alex Mustard / Whitetip reef shark (Triaenodon obesus) beneath an overhang with Surgeonfish. Cousins Rock, San Salvador Island, Santiago Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.

David Fleetham / Oceanic whitetip shark (Carcharhinus longimanus) with diver observing in background. Hawaii. May 2008. Model released.

David Fleetham / Whitetip reef shark (Triaenodon obesus) and Green sea turtle (Chelonia mydas) looking at one another in underwater cavern. Maui, Hawaii.

David Fleetham / Oceanic whitetip shark (Carcharhinus longimanus) with Pilot fish (Naucrates ductor) and Remora (Echeneididae). In open ocean several miles off The Big Island / Hawaii, Hawaii.

David Fleetham / Whitetip reef shark (Triaenodon obesus), motion blurred image. Hawaii.

David Fleetham / Oceanic whitetip shark (Carcharhinus longimanus) that has swallowed a hook and is trailing the fishing line. Hawaii, May 2004.

David Fleetham / Whitetip reef shark (Triaenodon obesus) cruises over a sandy bottom off the island of Maui, Hawaii.

David Fleetham / Whitetip reef shark (Triaenodon obesus) cruises over a sandy bottom off the island of Maui, Hawaii.

David Fleetham / Photographer Doug Perrine photographing an oceanic White Tip Shark (Carcharhinus longimanus) off the coast of the Big Island, Hawaii. Model released.

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 / Diver and resting Whitetip reef shark (Triaenodon obesus) Tubbataha Reef, Philippines. Model released.

David Fleetham / Whitetip reef shark (Triaenodon obesus) on seabed. Hawaii.

David Fleetham / Whitetip reef shark (Triaenodon obesus) resting, Hawaii.

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos) and Whitetip reef shark (Triaenodon obesus) off Mana Island, Fiji.

Doug Perrine / Divers approach Whitetip reef shark (Triaenodon obesus) resting inside cavern, Gato Island, off Malapascua, Cebu, Philippines. Visayan Sea, Western Pacific Ocean.

Greg Basco/ BIA / Purple-bibbed Whitetip (Urosticte benjamini) hummingbird feeding on Heliconia (Heliconia sp) flower nectar, Ecuador

Norbert Wu / White-tip Reef Shark (Triaenodon obesus) group, Revillagigedo Islands, Mexico

Alex Mustard / Rich reef scene, showing marine life thriving in a cavern on a coral reef, with large sponges and Black coral (Antipathes sp.), Sixbar grouper (Cephalopholis sexaculata) and Whitetip soldierfish (Myri...

Bert Willaert / Pregnant Whitetip reef shark (Triaenodon obesus) swimming above reef. Kimbe Bay, West New Britain, Papua New Guinea

Mary McDonald / Purple-bibbed whitetip hummingbird (Urosticte benjamini) flying, Choco Cloud Forest, Ecuador. April.

Alex Mustard / Whitetip shark (Carcharhinus longimanus), accompanied by Pilotfish (Naucrates ductor), swims towards the camera as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Br...

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) is accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands N...

Claudio Contreras / Mexican Hogfish (Bodianus diplotaenia) and Whitetip Reef Shark (Triaenodon obesus) resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pac...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus), IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, March

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) resting on ground, IUCN Near Threatened, San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, Mar...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Sit...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Sit...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Sit...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Sit...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) group resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Herita...

Claudio Contreras / Whitetip Reef Shark (Triaenodon obesus) resting, IUCN Near Threatened, Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Sit...

Pete Oxford / White-tip Reef Shark (Triaenodon obesus), Rabida Island, Galapagos Islands, Ecuador

Oliver Geiseler/ BIA / Purple-bibbed Whitetip (Urosticte benjamini) male, Tandayapa Valley, Ecuador

Doug Perrine / Whitetip reef shark (Triaenodon obesus) upper and lower teeth on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Murray Cooper / Purple-bibbed Whitetip (Urosticte benjamini) hummingbird male calling, Ecuador

Pete Oxford / Purple-bibbed Whitetip (Urosticte benjamini) male feeding on flower nectar near Velvet-purple Coronet (Boissonneaua jardini) male, Mashpi Rainforest Biodiversity Reserve, Pichincha, Ecuador

Pete Oxford / Purple-bibbed Whitetip (Urosticte benjamini) male, western slope of Andes, Ecuador

Franco Banfi / Panamic green moray (Gymnothorax castaneus) and Whitetip reef sharks (Triaenodon obesus) Roca Partida close to San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve, Socorro Islands, Weste...

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) group resting in coral reef, Roca Partida close to San Benedicto island, Revillagigedo Archipelago Biosphere Reserve, Socorro Islands, Western Mexico

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) group resting in coral reef, Roca Partida close to San Benedicto island, Revillagigedo Archipelago Biosphere Reserve, Socorro Islands, Western Mexico

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) resting on sea floor, Roca Partida close to San Benedicto island, Revillagigedo Archipelago Biosphere Reserve, Socorro Islands, Western Mexico

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) resting on sea floor, Roca Partida close to San Benedicto island, Revillagigedo Archipelago Biosphere Reserve, Socorro Islands, Western Mexico

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) resting on the sea floor, Roca Partida close to San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve, Socorro Islands, Western Mexico

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) cruising through water,. This individual is accompanied by a group of Pilotfish (Naucrates ductor), mostly out of frame. Little Brother Island, Egypt....

Jordi Chias / Whitetip reef sharks (Triaenodon obesus) resting on sea floor, Roca Partida, Socorro Islands. Mexico, Pacific Ocean

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by a group of Pilotfish (Naucrates ductor). Rocky Island, Egypt. Red Sea

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by a group of Pilotfish (Naucrates ductor). Rocky Island, Egypt. Red Sea

Franco Banfi / Whitetip reef shark (Triaenodon obesus) resting on the bottom, Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) portrait, Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) portrait, Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) resting on the bottom, Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) and shoal of Whipper snappers (Lutjanus jordani) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Scuba diver and Whitetip reef shark (Triaenodon obesus) Cocos Island National Park, Natural World Heritage Site, Costa Rica, East Pacific Ocean. September 2012.

Franco Banfi / Whitetip reef shark (Triaenodon obesus) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) resting, Cocos Island National Park, Natural World Heritage Site, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark, Triaenodon obesus, resting, Cocos Island National Park, Natural World Heritage Site, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef sharks (Triaenodon obesus) two resting, Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) resting close to Marbled ray (Taeniurops meyeni) Cocos Island National Park, Natural World Heritage Site, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) resting close to Marbled ray (Taeniurops meyeni) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) portrait, Cocos Island National Park, Natural World Heritage Site, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) Cocos Island National Park, Costa Rica, East Pacific Ocean