Sylvain Cordier / Monarch butterfly (Danaus plexippus) wintering in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve / Reserva de Biosfera de la Mariposa Monarca UNESCO World Heritage Site, An...

Claudio Contreras / Californian sea lion (Zalophus californianus) swimming in Southern sea palm (Eisenia arborea) and Giant Kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphe...

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) calf breaching, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) calf breaching, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) calf breaching, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) breaching at sunset, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) breaching, Monterey Bay, California

Claudio Contreras / California condor (Gymnogyps californianus), portrait. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Claudio Contreras / California condor (Gymnogyps californianus), two perched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Alex Mustard / California sea lion (Zalophus californianus) pups in an underwater cave. Los Islotes, La Paz, Baja California Sur, Mexico. Sea of Cortez, Gulf of California, East Pacific Ocean.

Alex Mustard / Whale shark (Rhincodon typus) close to the camera with a golden trevally fish (Gnathanodon speciosus) and outline of another whale shark behind , in the plankton-rich green waters of La Paz bay, Baja...

Alex Mustard / RF - Silhouette of a California sea lion (Zalophus californianus) swimming through an underwater cave. Los Islotes, La Paz, Baja California Sur, Mexico. Sea of Cortez, Gulf of California, East Pacific...

Franco Banfi / School of Munk's devil ray, pygmy devil ray, (Mobula munkiana), feeding on plankton at night, photographed on a long exposure, Espiritu Santo Island, Sea of Cortez, Baja California, Mexico, East Pacif...

Mark Carwardine / Aerial view Fin whales (Balaenoptera physalus) lunge-feeding in the southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view of Fin whale (Balaenoptera physalus) lunge-feeding, with throat pouch distended, southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view Fin whales (Balaenoptera physalus) lunge-feeding in the southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view Fin whales (Balaenoptera physalus) lunge-feeding in the southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Franco Banfi / Scuba diver exploring El Eden cenote. Quintana Roo, Yucatan Peninsula, Mexico.

Franco Banfi / Water lilies at the surface in Cenote Nicte-Ha,Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Franco Banfi / Water lilies at the surface in Cenote Nicte-Ha,Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Franco Banfi / Freshwater fish including Cichlid between water plants and leaves. Cenote Nicte-Ha, near Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Franco Banfi / Freshwater fishes including Cichlid between water plants and leaves. Cenote Nicte-Ha, near Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Franco Banfi / Freshwater turtle (Trachemys scripta venusta) swimming amongst Water lilies leaves, Gran Cenote, near Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Ralph Pace / Swell Shark (Cephaloscyllium ventriosum) egg case and embryo, Monterey, California

Franco Banfi / Striped marlin (Kajikia audax) hunting Sardine (Sardinops sagax) in bait ball. Magdalena Bay, Baja California Sur, Mexico.

Franco Banfi / California sealion (Zalophus californianus) swimming. Magdalena Bay, Baja California Sur, Pacific Ocean, Mexico

Franco Banfi / Striped marlin (Tetrapturus audax) feeding on Sardine (Sardinops sagax). Magdalena Bay, Baja California Sur, Pacific Ocean, Mexico.

Melvin Grey / Purple-throated mountain gem (Lampornis calolaemus) adult female - about to feed from flower, Atlantic Rainforest, Costa Rica.

Claudio Contreras / Devil's hand Tree (Chiranthodendron pentadactylon) flower, Filo de Caballos, Sierra Madre del Sur, southern Mexico, March

Claudio Contreras / Central American spider monkey (Ateles geoffroyi) juveniles hanging by tails and playing, Calakmul Biosphere Reserve, Yucatan Peninsula, Mexico, August

Claudio Contreras / Puente de Dios cascades, Tamasopo, Huasteca Region, Mexico, August

Claudio Contreras / Broadfoot mushroomtongue salamander (Bolitoglossa platydactyla), Catemaco Lake, Los Tuxtlas Rainforest, Mexico, July

Nick Hawkins / Rocks and coastal rainforest. Cocos Island National Park, Costa Rica. 2018.

Nick Hawkins / Fish seeking shelter around floating tree in open ocean. Off coast of Cocos Island National Park, Costa Rica.

Nick Hawkins / Silky shark (Carcharhinus falciformis). Cocos Island National Park, Costa Rica.

Paul Hobson / Rufous motmot (Baryphthengus martii) perched on branch. Rancho Naturalista, Cartago, Costa Rica.

Paul Hobson / Resplendent quetzal (Pharomachrus mocinno) male perched on branch. Costa Rica.

Paul Hobson / Parrot snake (Leptophis ahaetulla) in aggressive pose with mouth open. Costa Rica.

Paul Hobson / Rivoli's hummingbird (Eugenes fulgens) nectaring on Fuchsia (Fuchsia sp) flower. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp), three nectaring on flower. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) flying towards Banana (Musa sp) flower to feed. Costa Rica.

Paul Hobson / Keel-billed toucan (Ramphastos sulfuratus) perched on branch with beak open. Laguna del Lagarto, Alajuela, Costa Rica.

Paul Hobson / Green-crowned brilliant (Heliodoxa jacula), three feeding on Lobster-claw (Heliconia sp) flower in rain. Costa Rica.

Paul Hobson / Violet sabrewing hummingbird (Campylopterus hemileucurus) nectaring on Orchid. Costa Rica.

Thomas Marent / Keel-billed Toucan (Ramphastos sulfuratus), native to Central and South America

Chase Dekker / Orca (Orcinus orca) male tail slapping, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Long-beaked Common Dolphin (Delphinus capensis) pod porpoising, Monterey Bay, California

Chase Dekker / Common Loon (Gavia immer) spreading wings, Monterey Bay, California

Chase Dekker / Blue Whale (Balaenoptera musculus), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding, Monterey Bay, California

Mark Carwardine / Humpback whales (Megaptera novaeangliae) aerial. Baja California, Mexico

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air with one leaping out of the water, Baja California, Mexico

Mark Carwardine / Short-finned pilot whale (Globicephala macrorhynchus) aerial view, Baja California, Mexico

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air, Baja California, Mexico.

Phil Savoie / White tent making bat (Ectophylla alba) roosting in Heleconia leaf, La Selva Field Station, Costa Rica.

Glenn Bartley/ BIA / Keel-billed Toucan (Ramphastos sulfuratus), Costa Rica

Glenn Bartley/ BIA / Great Curassow (Crax rubra), Costa Rica

Glenn Bartley/ BIA / Black-mandibled Toucan (Ramphastos ambiguus) during rainfall, Costa Rica

David Fleetham / Great white shark (Carcharodon carcharias), two below surface. Guadalupe Island, Mexico.

David Fleetham / Great white shark (Carcharodon carcharias) dorsal fin visible on surface. Guadalupe Island, Mexico.

David Fleetham / Great white shark (Carcharodon carcharias) breaking surface with mouth open. Guadalupe Island, Mexico.

Piotr Naskrecki / Banded Tree Snake (Tripanurgos compressus), Costa Rica

Piotr Naskrecki / Grasshopper (Tropidacris cristata) on hand, Costa Rica

Piotr Naskrecki / Toltec Fruit-eating Bat (Artibeus toltecus) flying, Monteverde Cloud Forest Reserve, Costa Rica

Piotr Naskrecki / Chestnut Short-tailed Bat (Carollia castanea) flying, La Selva Biological Reserve, Costa Rica

Piotr Naskrecki / Hairy Big-eyed Bat (Chiroderma villosum) flying, Costa Rica

Piotr Naskrecki / Silky Short-tailed Bat (Carollia brevicauda) flying, La Selva Biological Reserve, Costa Rica

Piotr Naskrecki / Niceforo's Big-eared Bat (Trinycteris nicefori) flying, Costa Rica

Piotr Naskrecki / Red-eyed Tree Frog (Agalychnis callidryas), Belize

Piotr Naskrecki / Mexican Red Rump Tarantula (Brachypelma vagans), Belize

Claudio Contreras / Grey whale (Eschrichtius robustus) breaching, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, March

Claudio Contreras / Grey whale (Eschrichtius robustus) tail, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, March

Claudio Contreras / Grey whale (Eschrichtius robustus) calf, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, February

Tony Wu / Indo-Pacific sailfish (Istiophorus platypterus) in feeding frenzy, with the remains of a previously large school of sardines (Sardina sp) in background. Isla Mujeres, Cancun, Mexico.

Jeff Foott / Wild California condor (Gymnogyps californianus) near San Pedro Martir National Park, Northern Baja California, Mexico.

David Fleetham / California yellowtail (Seriola lalandi dorsalis) Guadalupe Island, Mexico.

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.

Gavin Hellier / Timelapse of a container ship using the new extension to the Panama Canal, Colon, Panama, November 2016. Hellier

Sylvain Cordier / Monarch butterfly (Danaus plexippus), wintering from November to March in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico.

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina) pup, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina) pup, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / American Black Vulture (Coragyps atratus) flying near skyscrapers, Ancon Hill, Panama City, Panama

James Dunbar / Timelapse of a Tiger longwing (Heliconius hecale) forming a chrysalis. Controlled conditions. Native to South and Central America.

Claudio Contreras / Olive Ridley Sea Turtle (Lepidochelys olivacea) nesting, Arribada (mass nesting event), Playa Morro Ayuta, Oaxaca state, southern Mexico. Vulnerable species.

Alex Mustard / California sea lion (Zalophus californianus) uses a Panamic cushion star (Pentaceraster cumingi) as a toy. The sealions pick up the starfish and then drop them and chase after them as they sink. Los I...

Alex Mustard / Schools of Pacific creolefish (Cephalopholis colonus) and Panamic sergeant major (Abudefduf troschelii) swimming through sun beams inside an underwater cavern. Los Islotes, La Paz, Baja California Sur...

Jen Guyton / American crocodiles (Crocodylus acutus) in the Rio Tarcoles, Costa Rica.

Jen Guyton / American crocodiles (Crocodylus acutus) in the Rio Tarcoles, Costa Rica.

Pascal Kobeh / The Zaci cenote with people swimming, in the middle of Valladolid, Yucatan peninsula, Mexico.

Pascal Kobeh / Graysby seabass (Cephalopholis cruentata) on the reef, Yucatan peninsula, Mexico, Caribbean.

Pascal Kobeh / School of white margates or white grunts (Haemulon album) Yucatan peninsula, Mexico.

Pascal Kobeh / Close-up of a school of bluestriped or boar grunts (Haemulon sciurus) Yucatan peninsula, Mexico, Caribbean.