Bence Mate / Green / Double-crested basilisk (Basiliscus plumifrons) running across water surface, Santa Rita, Costa Rica. Did you know? This amazing lizard is colloquially known as the 'Jesus Christ lizard' for i...

Solvin Zankl / Baby Olive Ridley sea turtle (Lepidochelys olivacea) struggles against the swell to swim away from the beach where it hatched, Ostional, Costa Rica. October. Winner of the Underwater category of the G...

Doug Perrine / Bryde's whale {Balaenoptera brydei / edeni} with throat pleats expanded after feeding on baitball of Sardines {Sardinops sagax} off Baja California, Mexico, Eastern Pacific Ocean. Veolia Environnement...

David Fleetham / Great white shark (Carcharodon carcharias) with mouth open, just below the surface off Guadalupe Island, Mexico.

David Fleetham / Great white shark (Carcharodon carcharias) off Guadalupe Island, Mexico.

David Fleetham / Great white shark (Carcharodon carcharias), portrait. Guadalupe Island, Mexico.

Franco Banfi / California sea lion (Zalophus californianus), Los Islotes, Sea of Cortez, Baja California peninsula, Mexico, East Pacific Ocean.

Pascal Kobeh / Group of Short-finned pilot whales (Globicephala macrorhynchus) swimming down into deep water, Costa Rica. Pacific ocean.

Pascal Kobeh / Group of Short-finned pilot whales (Globicephala macrorhynchus) in open water, maybe the whole family with the male, the female and the calves, Costa Rica. Pacific ocean.

Pascal Kobeh / Short-finned pilot whale (Globicephala macrorhynchus) close to the surface, Costa Rica. Pacific ocean.

Pascal Kobeh / Great white shark (Carcharodon carcharias) in open water, Guadalupe island, Mexico. Pacific Ocean.

Pascal Kobeh / Scalloped hammerhead (Sphyrna lewini), Cocos Island , Costa Rica. Pacific Ocean.

Ammonite / Baird's tapir (Tapirus bairdii) entering a pool of water and wallowing, footage taken at night using thermal camera technology, Santa Rosa National Park, Costa Rica.

Ammonite / Timelapse of mist moving over and dispersing above cloud forest, Santa Rosa National Park, Costa Rica, 2008.

Ammonite / Timelapse of mist moving over and dispersing above cloud forest, Santa Rosa National Park, Costa Rica, 2008.

Ammonite / Male White-throated / White-faced capuchin (Cebus capucinus) climbing and jumping in canopy, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Black-handed / Geoffroy's spider monkey (Ateles geoffroyi) feeding on figs, Santa Rosa National Park, Costa Rica.

Ammonite / Northern tamandua (Tamandua mexicana) climbing down and falling out of tree, showing use of partially prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Northern tamandua (Tamandua mexicana) climbing down tree, showing use of partially prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / White-throated capuchins (Cebus capucinus) alarm calling, Santa Rosa National Park, Costa Rica.

Ammonite / White-throated / White-faced capuchin (Cebus capucinus) climbing and playing with twig, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Juvenile Mantled howler monkey (Alouatta palliata) climbing through canopy, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Mantled howler monkey (Alouatta palliata) climbing through canopy, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Family of White-throated / White-faced capuchins (Cebus capucinus) resting and grooming each other, Santa Rosa National Park, Costa Rica.

John Cancalosi / Adult Common morpho butterfly (Morpho peleides) emerging from chrysalis, Costa Rica. Sequence 1/4.

John Cancalosi / Hooded mantis (Choeradodis rhombifolia) eating katydid prey, Costa Rica.

John Cancalosi / Hooded mantis (Choeradodis rhombifolia) catching katydid prey, Costa Rica. Sequence 1/2.

Claudio Contreras / Giant Manta Ray (Manta birostris) at cleaning station with Clarion Angelfish (Holacanthus clarionensis) San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (The Socorro Islands), Pacific...

Claudio Contreras / Giant Manta Ray (Manta birostris), San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico. Vulnerable species.

Jack Dykinga / Bottlenose dolphins (Tursiops truncatus) near Isla Animas, Sea of Cortez, Baja Sur, Mexico.

Jack Dykinga / Common Dolphins (Delphinus delphis) swimming near Isla Animas, Sea of Cortez, Baja Sur, Mexico.

Chris & Monique Fallows / Indo Pacific Sailfish (Istiophorus platypterus) feeding on sardines (Sardina pilchardus), Isla Mujeres, Mexico, March.

Alex Mustard,Alex Mustard / Whaleshark (Rhincodon typus) swimming and filtering fish eggs from the water. A behaviour known as ram-feeding. Isla Mujeres, Quintana Roo, Yucatan Peninsular, Mexico. Caribbean Sea.

Alex Mustard / A diver explores Chac Mool Cenote (or sinkhole) Puerto Aventuras, Quintana Roo, Mexico. No release available.

Claudio Contreras / Tricoloured heron (Egretta tricolor), Guerrero Negro, Vizcaino Biosphere Reserve, Baja California Peninsula, Mexico, May

Bence Mate / Portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Portrait of Splendid leaf frog (Agalychnis calcarifer) climbing vegetation, Santa Rita, Costa Rica

Bence Mate / Green / Double-crested basilisk (Basiliscus plumifrons) running across water surface, Santa Rita, Costa Rica

Bence Mate / Shadow outline of Splendid leaf frog (Agalychnis calcarifer) through leaf, Santa Rita, Costa Rica

Bence Mate / Head portrait of young Spectacled caiman (Caiman crocodilus) partially submerged in water, with reflection, Santa Rita, Costa Rica

Igor Shpilenok,Igor Shpilenok / American Mink (Neovison vison) swimming. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, June.

Igor Shpilenok / European Bison (Bison bonasus) calf and mother portrait. 'Mefody', first calf born to reintroduced herd in Bryansk Forest. Bryansk Forest Zapovednik, Kamchatka, Russian Far East, May.

Alex Mustard / Two Whale sharks (Rhincodon typus) feeding on fish eggs at the surface, Isla Mujeres, Quintana Roo, Yucatan Peninsula, Mexico, Caribbean Sea.

Mark Carwardine / Whale shark (Rhincodon typus) aerial view of juvenile with two people swimming alongside, La Paz Bay, Sea of Cortez (Gulf of California), Baja California, Mexico, March 2009

Mark Carwardine / Hands of a tourist leaning from boat to touch the mouth of a friendly Grey whale (Eschrichtius robustus) lying on the surface, San Ignacio Lagoon, Baja California, Mexico, April 2009

Mark Carwardine / Grey whale (Eschrichtius robustus) underwater, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Split-level of tourist in small boat leaning out to touch a Grey whale (Eschrichtius robustus) San Ignacio Lagoon, Baja California, Mexico, April 2009

Mark Carwardine / Tourists watching Grey whale (Eschrichtius robustus) spyhopping, San Ignacio Lagoon, Baja California, Mexico, February 2010

Mark Carwardine / Grey whale (Eschrichtius robustus) spyhopping, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Whale shark (Rhincodon typus) aerial view of juvenile with two people swimming alongside, La Paz Bay, Sea of Cortez (Gulf of California), Baja California, Mexico, March 2009

Mark Carwardine / Tourists in small boat leaning out to touch a curious Grey whale (Eschrichtius robustus) San Ignacio Lagoon, Baja California, Mexico, March 2007

Mark Carwardine / Tourists in small boat watching curious Grey whale (Eschrichtius robustus) spyhopping, San Ignacio Lagoon, Baja California, Mexico, February 2007

Mark Carwardine / Grey whale (Eschrichtius robustus) close-up of eye, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Ocean sunfish (Mola mola) near surface, Baja California, Sea of Cortez (Gulf of California), Mexico

Claudio Contreras / Harbour Seal (Phoca vitulina), near San Quintin, Baja California Peninsula, Mexico, December.

Claudio Contreras / Heermann's Gull (Larus heermanni) in flight, Ensenada, Baja California Peninsula, Mexico, December.

Claudio Contreras / American Flamingo (Phoenicopterus ruber) juveniles following adults, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, August.

Claudio Contreras / Heermann's Gulls (Larus heermanni) in flight. Ensenada, Baja California Peninsula, Mexico, December.

Claudio Contreras / American Flamingo (Phoenicopterus ruber) juveniles released from temporarty captivity, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico.

Claudio Contreras / Royal Tern (Thalasseus maximus), El Requeson, Gulf of California, Baja California Peninsula, Mexico, December.

Claudio Contreras / Osprey (Pandion haliaetus) flying with fish prey, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, August.

Claudio Contreras / Green Turtle (Chelonia mydas) hatchling on its way to the sea, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, August. Endangered species.

Jeff Rotman / Common thresher shark (Alopias vulpinus) caught in gill net, observed by diver at night, Huatampo, Mexico, Gulf of California, Pacific Ocean. Model released. May 2008.

Jeff Rotman / Common Thresher Shark (Alopias vulpinus) caught in gill net, Huatabampo, Mexico, Sea of Cortez, Pacific Ocean

Jeff Rotman / Common Thresher Shark (Alopias vulpinus) silhouette of one caught in gill net, Huatabampo, Mexico, Sea of Cortez, Pacific Ocean

Jeff Rotman / Common Thresher Shark (Alopias vulpinus) silhouette of one caught in gill net, Huatabampo, Mexico, Sea of Cortez, Pacific Ocean

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

Jeff Rotman / Common Thresher Shark (Alopias vulpinus) caught on gill net being hauled up onto boat, Huatabampo, Mexico, Sea of Cortez, Pacific Ocean. Model released. Model released.

Jeff Rotman / Common thresher shark (Alopias vulpinus) severed fin being held up by gill net fisherman, Huatabampo, Mexico, Sea of Cortez, Pacific Ocean Model released.

Alex Mustard / A school of lesser devil rays (Mobula hypostoma) flying through sunbeams as they feed. Isla Mujeres, Quintana Roo, Yucatan Peninsula, Mexico. Caribbean Sea.

Alex Mustard / Whale shark (Rhincodon typus) silhouette of shark feeding on floating fish eggs (not visible) just below the surface in calm weather, with snorkeller taking photos nearby, Isla Mujeres, Quintana Roo,...

Alex Mustard / Whale shark (Rhincodon typus) feeding on fish eggs (visible as white blobs) at the surface in calm weather, with another whale behind. Isla Mujeres, Quintana Roo, Yucatan Peninsular, Mexico, Caribbean...

Alex Mustard / Whale shark (Rhincodon typus) silhouette, feeding on floating fish eggs (not visible) just below the surface in calm weather. Note the bow wave ahead of the shark. Isla Mujeres, Quintana Roo, Yucatan...

Chris Mattison / Waxy leaf frog (Phyllomedusa sauvagii), captive, occurs South and Central America

Jack Dykinga / Woman swimming in Cenote Noh-Moson with Ficus tree roots, ten meters long, reaching toward the blue wate,r Yucatan, Mexico. No release available.

Claudio Contreras / French Angelfish (Pomacanthus paru) with a Smallmouth Grunt (Haemulon chrysargyreum) and Blade Fire Coral (Millepora complanata). Cancun National Park, Caribbean Sea, Mexico.

Claudio Contreras / Smooth Trunkfish (Lactophrys triqueter). Cancun National Park, Caribbean Sea, Mexico.

Claudio Contreras / Porkfish (Anisotremus virginicus) school. Cancun National Park, Caribbean Sea, Mexico.

Claudio Contreras / Atlantic Sailfish (Istiophorus albicans) attacking school of sardine (Sardinella aurita) bait ball. Isla Mujeres, Caribbean Sea, Mexico.

Claudio Contreras / Green Seaturtle (Chelonia mydas) in profile above sandy shallow sea bed. Endangered, Cancun National Park, Caribbean Sea, Mexico.

Claudio Contreras / Queen Angelfish (Holacanthus ciliaris) among other coral fish. Cancun National Park, Caribbean Sea, Mexico.

Claudio Contreras / Saucereye porgy (Calamus calamus). Cancun National Park, Caribbean Sea, Mexico.

Doc White / Steam from underwater volcanic activity. Socorro Island, Baja Mexico.

Pete Oxford / Two Common Bottlenose Dolphin (Tursiops truncatus) in shallow water. Punta Allen, Sian Ka'an Biosphere Reserve, Quintana Roo, Yucatan Peninsula, Mexico.

Inaki Relanzon / Whale Shark (Rhincodon typus), eating krill and plankton at the surface. Gulf of Mexico, Mexico, North America, August.

Alex Mustard / A young California sealion (Zalophus californianus) swims in a shallow pool. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A split level view of a bull California sealion (Zalophus californianus) swimming beneath Los Islotes sealion colony. La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A young California sealion (Zalophus californianus) portrait, inside an underwater cave. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A young California sealion (Zalophus californianus) playing with a starfish, inside an underwater cave. The pups will pick up a variety of objects (such as starfish, lumps of coral, shells and feather...

Alex Mustard / A young California sealion (Zalophus californianus) playing with a starfish, inside an underwater cave. The pups will pick up a variety of objects (such as starfish, lumps of coral, shells and feather...

Alex Mustard / A bull California sealion (Zalophus californianus) bursting through a school of baitfish in the shallows. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A young California sealion (Zalophus californianus) head portrait, Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A silhouette of a California sealion pup (Zalophus californianus) next to cliffs. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A silhouette of a young California sealion (Zalophus californianus) swimming just below the surface, close to shore. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / An adult California sealion (Zalophus californianus) makes a sharp turn at high speed. Los Islotes, La Paz, Baja California, Mexico. Sea of Cortez, East Pacific Ocean.