Petra Wegner / Australian Shepherd, red-tri, close up of paw touching womans hand. Model released

Eric Baccega / Portrait of young female Inuit guide, Nunavut, Canada, August 2010. Model released

Bernard Walton / Charlotte Uhlenbroek with Orang utan {Pongo pygmaeus} Borneo Indonesia, on location for BBC tv series COUSINS, 2000

Mark Moffett / Meg Lowman strides across a canopy raft to collect insect samples with her net as Bruce Rinker inspects the previous catch, Cameroon

Bob Barbour / Woman surfer catching a wave

Colin Monteath / Climber enjoying view of Mt CookÆs Caroline Face from Ball Pass, Mt Cook National Park, New Zealand

Norbert Wu / Scuba diver among colorful corals

Norbert Wu / Atlantic Spotted Dolphin (Stenella frontalis) swimming with Katherine Gilman, Little Bahama Bank, Caribbean

Flip Nicklin / Orca (Orcinus orca) leaping, watched by tourists from Stubbs Island charter boat, Johnstone Strait, northeast Vancouver Island, Canada

Norbert Wu / Atlantic Spotted Dolphin (Stenella frontalis) playing with Poppi Gilman, Little Bahama Bank, Caribbean

Flip Nicklin / Gray Whale (Eschrichtius robustus) touched by tourists, San Ignacio Lagoon, Baja California, Mexico

Norbert Wu / Snorkeler Deanna Mah at The Baths, British Virgin Islands

Mark Moffett / Forty meter rainforest canopy research crane used by researchers at Smithsonian Tropical Research Institute (STRI) at Parquet Metropolitan, Panama

Flip Nicklin / Blue Whale (Balaenoptera musculus) and researchers, Sea of Cortez, Mexico

Flip Nicklin / Bottlenose Dolphin (Tursiops truncatus) interacting with a female tourist, Dolphin Quest Learning Center, Hawaii

Gavin Hellier / Traditional Thai Dancer portrait, Sukhothai, Bangkok, Thailand, South East Asia

Gavin Hellier / Portrait of female Legong dancer in traditional costume, Bali, Indonesia. Model released

Fabio Liverani / Common European toad pair in amplexus. Split level with woman sunbathing, Italy

Mark Hamblin / 2020VISION / Man and woman walking in mountains, Cairngorms National Park, Scotland, Uk

Suzi Eszterhas / Hoffmann's Two-toed Sloth (Choloepus hoffmanni) orphan baby clinging to person's arms, Aviarios Sloth Sanctuary, Costa Rica

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researchers, Jennifer Aragon, Michael Johns, and Ilana Nimz, weighing chicks taken from artifical nesting burrows near research station, South Farallon Island...

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researcher, Ilana Nimz, weighing chick taken from artifical nesting burrow near research station, South Farallon Islands, Farallon Islands, Farallon National...

Kevin Schafer / Galapagos Sea Lion (Zalophus wollebaeki) begging at fish market, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Oriol Alamany / Woman hiker walking the 'Carros de Foc' trail at Cirque de Travessani with Punta Alta peak (3013 m), Boi valley, Aiguestortes i Estany de Sant Maurici National Park, Pyrenees, Catalonia, Spain. Model...

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with infant playing in tree during forest exploration and training program, Orangutan Care Center, Borneo, Indonesia

Colin Monteath / Alpaca (Lama pacos) and young with woman dressed in traditional Quechua clothing, Sacsahuayman, above Cuzco, Peru

Suzi Eszterhas / Hoffmann's Two-toed Sloth (Choloepus hoffmanni) with caretaker, Xinia Villegas, brushing orphaned baby, Aviarios Sloth Sanctuary, Costa Rica

Andy Trowbridge / Female fly fisher with a 'trophy' brown trout (Salmo trutta) of 12 pounds (5.5kg), Lewis Pass, North Canterbury, South Island, New Zealand. December, 2005.

Pete Oxford / White-taile Titi (Callicebus discolor) biologist, Amy Porter, radio tracking individual, Tiputini Biodiversity Station, adjacent to Yasuni National Park, Amazon Rainforest, Ecuador

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with juvenile in forest during forest exploration and training program, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker holding juvenile, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) two year old infant clinging to caretaker's back during forest walk, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) two year old infant playing on caretaker during forest exploration and training, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with two year old infant during forest exploration and training program, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with infant in tree during forest exploration and training program, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with infant playing in tree during forest exploration and training program, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker putting infants in tree for forest exploration and training, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with infant at bath time, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with infant at bath time, Orangutan Care Center, Borneo, Indonesia

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker bottle-feeding one year old infant, Orangutan Care Center, Borneo, Indonesia

Colin Monteath / Woman overlooks frozen lake, Tasman Glacier, Mount Cook National Park, New Zealand

Mark Moffett / Green Tree Ant (Oecophylla smaragdina) larvae in omelette near Angkor Wat, Cambodia

Stephen Belcher / Kakapo (Strigops habroptilus) researchers tracking bird with radio telemetry, Codfish Island, New Zealand

Stephen Belcher / Kakapo (Strigops habroptilus) researchers fitting radio transmitter to bird, Codfish Island, New Zealand

Stephen Belcher / Kakapo (Strigops habroptilus) researcher tracking bird with radio telemetry, Codfish Island, New Zealand

Stephen Belcher / Kakapo (Strigops habroptilus) chick held by researcher about to be weighed, Codfish Island, New Zealand

Stephen Belcher / Kakapo (Strigops habroptilus) having blood taken by researchers, Codfish Island, New Zealand

Flip Nicklin / Gray Whale (Eschrichtius robustus) calf being touched by tourist, Baja California, Mexico

Dave Watts / Tourist feeding female Mareeba rock wallaby (Petrogale mareeba) with joey in pouch, near Mareeba, Queensland, Australia, November 2010

Roland Seitre / Veterinary officer, Eric Baitchman, and Conservation officer, Heidi Griffith, examining female Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at frog breeding station, El Valle Am...

Hiroya Minakuchi / Gray Whale (Eschrichtius robustus) calf being pet by tourists on whale watching boat, showing baleen plates, San Ignacio Lagoon, Baja California, Mexico

Nick Turner / Two female walkers carrying young children beside Lavender fields, Snowshill Lavender Farm, Gloucestershire, UK, July 2008.

Charlie Summers / Navajo hogan constructed for a woman. The type of construction, specifically how the entrance is made, determines the gender of a hogan. Monument Valley, Arizona, September 2011.

Petra Wegner / Australian Shepherd, red-tri and mixed breed dog, bitch, 15 years sitting with woman. Model released

Kristel Richard / The first two Indian female jockeys mounted on thoroughbred horses to pass the finishing line at the All Indian Race, at the annual Indian Crow Fair, Crow Agency, near Billings, Montana, USA, August 2...

Ingo Arndt / Brown Rat (Rattus norvegicus) carcasses with Ruth Fraser doing DNA tests in lab lab for South Georgia Heritage Trust Rat Eradication Project, King Edward Point, South Georgia Island

James Christensen / Ecuadorian Toad-headed Pit-viper (Bothrocophias campbelli) held up by photographer's assistant, Shannon Bowley, Mindo, western slope of Andes, Ecuador

James Christensen / Tall Elephant's Ear (Xanthosoma undipes) and photographer's assistant Shannon Bowley, Mindo, western slope of Andes, Ecuador

Piotr Naskrecki / Japanese Horseshoe Crab (Tachypleus tridentatus) blood which is blue due to copper-based hemocyanin and is widely used in the medical field, Japan

Jeff Rotman / Woman Snake Charmer holding cobras. Jaipur- India. Model Released- Aisha Khan

David Woodfall / Rear view of couple watching leaping salmon. River Marteg SSSI, Gilfach farm nature reserve, Radnorshire Wildlife Trust, November.

David Woodfall / Rear view of couple watching leaping salmon. River Marteg SSSI, Gilfach farm nature reserve, Radnorshire Wildlife Trust, November. Model released

Christian Ziegler / Red Mangrove (Rhizophora mangle) researcher Dr. Ilka Feller censusing long term observation plots, Twin Cays, Carrie Bow Cay, Belize

Ingo Arndt / Brown Rat (Rattus norvegicus) trapped by Ruth Fraser at whaling station for South Georgia Heritage Trust Rat Eradication Project, Grytviken, South Georgia Island

Mark Moffett / Students picking lettuce to prepare salad under direction of Michelle Obama and White House chef Sam Kassat, White House, Washington D.C.

Carol Walker / Female cowboy riding domestic horse through scrub, Sombrero Ranch, Colorado, USA, May 2010, model released

Carol Walker / Female cowboy galloping on horse, Sombrero Ranch, Colorado, USA, May 2010, model released

Carol Walker / Silhouette of female cowboy and horse at sunset, Sombrero Ranch, Colorado, USA, May 2010, model released

Carol Walker / Female cowboy riding grey horse, Sombrero Ranch, Colorado, USA, May 2010, model released

Bryan and Cherry Alexander / Puyni, a young Nenets woman, at a reindeer herder's camp near Tambey, Yamal Peninsula, Western Siberia, Russia, March 2011

Bryan and Cherry Alexander / Natasha Serpevo, a Nenets reindeer herder, out checking her family's reindeer at their winter pastures on the tundra near Tambey. Yamal Peninsula, Western Siberia, Russia, March 2011

Bryan and Cherry Alexander / At their winter camp, Emma Vanuito, a Nenets woman, holds her daughter, Nenya. Tambey. Yamal Peninsula, Western Siberia, Russia. March 2011

Suzi Eszterhas / Hoffmann's Two-toed Sloth (Choloepus hoffmanni) orphaned baby fed by caretaker Xinia Villegas, Aviarios Sloth Sanctuary, Costa Rica

Suzi Eszterhas / Hoffmann's Two-toed Sloth (Choloepus hoffmanni) held by sanctuary owner Judy Avey-Arroyo, Aviarios Sloth Sanctuary, Costa Rica

Suzi Eszterhas / Hoffmann's Two-toed Sloth (Choloepus hoffmanni) two week old orphaned twins fed by sanctuary owner Judy Avey-Arroyo, Aviarios Sloth Sanctuary, Costa Rica

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) held by sanctuary owner Judy Avey-Arroyo, Aviarios Sloth Sanctuary, Costa Rica

Pete Oxford / Tobacco (Nicotiana sp) sorting and drying factory, Vinales Valley, Sierra del Rosario, Pinar del Rio, Cuba

Hiroya Minakuchi / Indo-pacific Bottlenose Dolphin (Tursiops aduncus) pod and diver, Ogasawara Islands, Japan

Hiroya Minakuchi / Bottlenose Dolphin (Tursiops truncatus) playing with tourist, Monkey Mia, Western Australia

Kevin Schafer / Amazon River Dolphin (Inia geoffrensis) being freeze-marked by biologists Tony Martin and Vera da Silva, Mamiraua Reserve, Amazonia, Brazil

Kevin Schafer / Southern Cassowary (Casuarius casuarius) female scavenging at picnic table near Innisfail, Queensland, Australia

Kevin Schafer / Amazon River Dolphin (Inia geoffrensis) captured by scientist Vera da Silva, Mamiraua Reserve, Brazil

Florian Möllers / Woman rescues the duckling of a Mallard (Anas platyrhynchos) nesting in window box of a 4th floor flat, female duck watching, Berlin, Germany, June

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) male being released by fisheries worker into Adams River after gathering scientific data, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Pete Oxford / Hippopotamus (Hippopotamus amphibius) named Jessica was orphaned as a baby, on porch with dog and person, Lowveld, South Africa

Colin Monteath / Woman climber ice climbing on grounded iceberg with cruise ship passengers looking on, Pleneau Island, Antarctic Peninsula, Antarctica

Suzi Eszterhas / Woman working in tea fields in a village near Kaziranga National Park, India

RHONDA KLEVANSKY / Portrait of female dancer performing in the streets with crowd of spectators at the Oruro Carnival. This is the biggest annual cultural event in Bolivia, with Morenada music and dancing originating fr...

Pete Oxford / South American River Turtle (Podocnemis expansa) researchers weighing individual, part of captive breeding program, Orinoco River, Apure, Venezuela

Scott Leslie / Hiker on boardwalk across wetland and massive sand dunes, Prince Edward Island, Canada

Tim Laman / A pet female Eclectus Parrot (Eclectus roratus) keeps a woman company as she does the washing in Kabilo Village, Mayalibit Bay. This is an area of Waigeo Island visited by Alfred Russel Wallace in the...

Pete Oxford / Galapagos Petrel (Pterodroma phaeopygia) nesting area being baited with rat poison to remove introduced rats around colony, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Protest for higher wages on May 14, 2008, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group and tourists, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group and tourists, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Gary K. Smith / Female gardener planting out pot grown summer Cabbage plants (Brassica oleracea capitata) variety 'Hispi', in small raised bed, England, UK, May