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...

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 peched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

David Pattyn / Tayra (Eira barbara) climbing in a tree in rainforest habitat with fern covered trees, Bellavista private reserve, Mindo cloud forest area, Ecuador, July

David Pattyn / Tayra (Eira barbara) climbing in a tree in rainforest habitat with fern covered trees, Bellavista private reserve, Mindo cloud forest area, Ecuador, July

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Nick Hawkins / Galapagos green turtle (Chelonia mydas agassizi) swimming above sea floor with shoal of fish in background. Off San Cristobal Island, Galapagos.

Tui De Roy / San Cristobal giant tortoises (Chelonoidis chatamensis), fighting, Galapaguera, San Cristobal Island, Galapagos

Tui De Roy / Blue-footed booby (Sula nebouxii), pair in courtship display. Punta Pitt, San Cristobal Island, Galapagos. April 2017.

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

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

Jaymi Heimbuch / Coyote (Canis latrans) female in city, San Francisco, Bay Area, California

Lucas Bustamante / Coastal glassfrog (Cochranella litoralis) on leaf with eggs. San Lorenzo, Esmeraldas, Ecuador.

Mark Carwardine / Grey whale (Eschrichtius robustus) at water surface with mouth open showing baleen plates, San Ignacio Lagoon, Baja California, Mexico

Claudio Contreras / Californian Sealion (Zalophus californianus) in kelp (Macrocystis pyrifera) forest, San Benito del Este Island, Baja California Peninsula Pacific Islands Biosphere Reserve, Baja California, Mexico, Ma...

Tui De Roy / Chatham Island Tortoise (Chelonoidis nigra chathamensis), Galapaguera, San Cristobal Island, Galapagos Islands, Ecuador

Claudio Contreras / Great Frigatebird (Fregata minor) departing from nest, San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Isl...

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) biologist, Ben Pearl, picking up chick from mud flat in salt pond, Eden Landing Ecological Reserve, Union City, Bay Area, California

Alex Hyde / Jumping spider (Salticidae) hunting among vegetation, San Jose, Costa Rica.

Cyril Ruoso / South American fur seal (Arctocephalus australis) coming up to beach from sea, Punta San Juan, Peru

Cyril Ruoso / South American fur seal (Arctocephalus australis) male head profile, Punta San Juan, Peru

Alex Mustard / Nassau grouper (Epinephelus striatus) yawning on a coral reef drop off. San Salvador island, Bahamas. Bahamas Sea, Tropical West Atlantic Ocean.

ZSSD / Indian Rhinoceros (Rhinoceros unicornis) male calf, San Diego Zoo Safari Park, California

Floris van Breugel / Manzanita (Arctostaphylos glauca) bark detail, San Gabriel Mountains, California, USA February

Floris van Breugel / Monarch butterflies (Danaus plexippus) over winter on Eucalyptus and Monterey Cypress trees near Pismo Beach, San Luis, California, USA December.. When temperatures warm up enough, they will embark on...

Pete Oxford / San Lucas marsupial frog (Gastrotheca pseustes) captive, occurs in Ecuadorian Andes.

Alex Mustard / Portrait of Sally lightfoot crab (Grapsus grapsus) on a beach. San Cristobal Island, Galapagos Islands, Ecuador. Tropical East Pacific Ocean.

Alex Mustard / Nassau grouper (Epinephelus striatus) watched by a diver on a coral reef. San Salvador island, Bahamas. Bahamas Sea, Tropical West Atlantic Ocean.

Sean Crane / Northern Elephant Seal (Mirounga angustirostris) male calling in territoral display with breath visible, San Simeon, California

Richard Herrmann / Smooth Hammerhead Shark (Sphyrna zygaena), Nine Mile Bank, San Diego, California

James Christensen / False Zebra Longwing (Heliconius atthis) butterfly, Hacienda San Vicente, Mindo, Ecuador

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) and Blue Marlin (Makaira nigricans) beside floating kelp, Nine Mile Bank, San Diego, California

Eric Baccega / Portrait of Naro San Bushman with leather headdress made of duiker skin, Kalahari, Ghanzi region, Botswana, Africa. October 2014.

Eric Baccega / Portrait of Naro San Bushman with leather headdress made of duiker skin, Kalahari, Ghanzi region, Botswana, Africa. October 2014.

Eric Baccega / Naro San Bushmen sitting in front of their hut, Kalahari, Ghanzi region, Botswana, Africa. Dry season, October 2014.

Eric Baccega / Naro San Bushman hunting in the bush with traditional bow and arrow, Kalahari, Ghanzi region, Botswana, Africa. Dry season, October 2014.

Gavin Hellier / Timelapse from day to night of vehicles driving across the Golden Gate Bridge, San Francisco, California, USA, 2011.

Gavin Hellier / Timelapse of advection fog rolling in under the Golden Gate Bridge, San Francisco, California, USA, 2011.

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.

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) pod, Nine Mile Bank, San Diego, California

Tim Fitzharris / El Arco, Cabo San Lucas, Baja California Mexico

Claudio Contreras / Northern mockingbird (Mimus polyglottos) in courtship display, San Quintin, Baja California Peninsula, Mexico,

Claudio Contreras / Northern mockingbird (Mimus polyglottos) in courtship display, San Quintin, Baja California Peninsula, Mexico,

Laurent Geslin / San bushmen child portrait, Kalahari desert, Namibia 2005

Laurent Geslin / Two San bushmen, Kalahari desert, Namibia 2005

Franco Banfi / Manta ray (Manta birostris), San Benedicto, Revillagigedo (Socorro) Islands, Mexico, East Pacific Ocean

Franco Banfi / Scuba diver and Manta ray (Manta birostris), San Benedicto, Revillagigedo (Socorro) Islands, Mexico, East Pacific Ocean. Model released.

Hiroya Minakuchi / Gray Whale (Eschrichtius robustus) spyhopping, San Ignacio Lagoon, Baja California, Mexico

Gavin Hellier / Panoramic view of the foggy skyline of San Francisco at sunrise, California, USA 2011

Gavin Hellier / Khao San Road at dusk, Banglamphu, Bangkok, Thailand, 2010. No release available.

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 / 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 / Grey whale calf (Eschrichtius robustus), San Ignacio Lagoon, Baja California, Mexico

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

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

Jack Dykinga / Sunset Crater National Monument with dawn light on the San Francisco Peaks over fields of flowering Prairie sunflowers (Helianthus petiolaris) Arizona

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

Tui De Roy / Brown pelican (Pelecanus occidentalis) in flight above wave. San Cristobal Island, Galapagos, Ecuador, June.

Solvin Zankl / Octopus (Octopus vulgaris), close up of eye, San Pietro Island, Sardinia, Italy, Mediterranean, July

Pete Oxford / San Lucas marsupial frog (Gastrotheca pseustes) base of Chimborazo Volcano (Highest mountain in Ecuador), Andes, Ecuador, South America - endemic to Ecuador, endangered species.

Mark Carwardine / Grey Whale (Eschrichtius robustus) calf at the water surface being petted by a tourist. San Ignacio Lagoon, Baja California, Mexico, April.

Rolf Nussbaumer / Chipping Sparrow (Spizella passerina) adult on ice covered Possum Haw Holly (Ilex decidua) berries. New Braunfels, San Antonio, Hill Country, Central Texas, USA, January.

Rolf Nussbaumer / Wild Turkey (Meleagris gallopavo), males displaying, New Braunfels, San Antonio, Hill Country, Central Texas, USA, March.

David Welling / Whitetail Antelope Squirrel (Ammospermophilus leucurus leucurus) feeding in front of wildflowers. Joshua Tree National Park, San Bernardino County, California, USA, May.

Floris van Breugel / Aerial view of spring wildflower displays, Phacelia (purple) San Joaquin Blazing Star (orange) and Coreopsis (yellow) Temblor Range, Carrizo Plain National Monument in California, USA, April 2010

Floris van Breugel / Aerial view of spring wildflower displays, Phacelia (purple) San Joaquin Blazing Star (orange) and Coreopsis (yellow) Temblor Range, Carrizo Plain National Monument in California, USA, April 2010

Winfried Wisniewski / Brown Pelican (Pelecanus occidentalis) landing, San Diego, California

Christophe Courteau / Kalahari bushmen, family playing traditional game, dry season, Central Kalahari Desert, Botswana, August 2008

Christophe Courteau / Kalahari bushmen, women playing with melon, Central Kalahari Desert, Botswana, August 2008

Christophe Courteau / Kalahari bushmen, Qoma, Xamse, Qabate and Qhaikgao, hunters, walking in the bush. Central Kalahari Desert. Botswana, August 2008

Christophe Courteau / Kalahari bushmen, Qhaikgao (right) teaching Xamse (left) how to hunt with a bow and arrow, Central Kalahari Desert, Botswana, August 2008

Christophe Courteau / 'Xamse', a young Kalahari bushman, drinking water from an ostrich's egg in the dry season, egg was buried underground during the rainy season, Kalahari Desert, Botswana, August 2008

Christophe Courteau / 'Xamse', a young Kalahari bushman, drinking water from an ostrich's egg in the dry season, egg was buried underground during the rainy season. Kalahari Desert, Botswana, August 2008

Christophe Courteau / Kalahari bushmen, Qhaikgao with a desert melon harvested in the bush, Central Kalahari Desert , Botswana, August 2008

Christophe Courteau / Kalahari bushmen, woman in central Kalahari desert, Botswana, November 2008

Christophe Courteau / Kalahari bushmen, couple in central Kalahari desert, Botswana, November 2008

Christophe Courteau / Kalahari bushmen playing traditional game, Kalahari desert, Botswana, September 2009

Christophe Courteau / Kalahari bushmen, family group preparing food in the bush, rainy season, Central Kalahari Desert, Botswana, March 2009

Guy Edwardes / Sunrise over "The Belvedere" (Tuscan farmhouse) and the Val d'Orcia, San Quirico d'Orcia,Tuscany, Italy April 2010

Rolf Nussbaumer / Whooping Crane (Grus americana) wading in coastal waters, Seadrift, San Antonio Bay, Gulf Intracoastal Waterway, Coastal Bend, Texas Coast, USA

Rolf Nussbaumer / Superb Green Cicada (Tibicen superba) adult emerging from nymph skin, New Braunfels, San Antonio, Hill Country, Central Texas, USA (Sequence 19/25)

Rolf Nussbaumer / Superb Green Cicada (Tibicen superba) adult emerging from nymph skin, New Braunfels, San Antonio, Hill Country, Central Texas, USA (Sequence 16/25)

Rolf Nussbaumer / Superb Green Cicada (Tibicen superba) adult emerging from nymph skin, New Braunfels, San Antonio, Hill Country, Central Texas, USA (Sequence 7/25)

Rolf Nussbaumer / Superb Green Cicada (Tibicen superba) adult emerging from nymph skin, New Braunfels, San Antonio, Hill Country, Central Texas, USA (Sequence 1/25)

Rolf Nussbaumer / Juvenile Northern Raccoon (Procyon lotor) climbing Cedar Elm (Ulmus crassifolia) New Braunfels, San Antonio, Hill Country, Central Texas, USA

Rolf Nussbaumer / Northern Cardinal (Cardinalis cardinalis) male feeding young Brown-headed Cowbird (Molothrus ater) New Braunfels, San Antonio, Hill Country, Central Texas, USA

Rolf Nussbaumer / Northern Cardinal (Cardinalis cardinalis) male perched on branch of Crape Myrtle (Lagerstroemia) New Braunfels, San Antonio, Hill Country, Central Texas, USA