Christophe Courteau / Tourists and guide using snowshoes on an ecotourism trekking holiday, Svalbard, Norway, June, 2012. Model released.

Shattil & Rozinski / Juvenile American black bear (Ursus americanus), brown phase, looking for food in a car, Denver, Colorado, USA, July.

Shattil & Rozinski / Juvenile American black bear (Ursus americanus), brown phase, standing upright and leaning on a car, Denver, Colorado, USA, July.

Ingo Arndt / Two scientists from the Alfred-Wegener Institute, collecting tide pool samples, North sea, Helogland, Germany

Jeff Foott / Sandstone rock formations with hiker, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Michael Durham / A three year old boy with a Pacific Tree Frog (Pseudacris regilla)

Chase Dekker / Atlantic Spotted Dolphin (Stenella frontalis) pod with snorkeler, Bahamas, Caribbean

Jeff Foott / Hiker near waterfall and rainbow, Nevada Fall, Yosemite National Park, California

Piotr Naskrecki / Flat Rock Scorpion (Hadogenes granulatus) and hand, Gorongosa National Park, Mozambique

Piotr Naskrecki / Longhorn Beetle (Tithoes confinis) on hand, Gorongosa National Park, Mozambique

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

Suzi Eszterhas / Common Wombat (Vombatus ursinus) foster mother, Linda Tabone, bottle feeding six month old orphaned joey, Bonorong Wildlife Sanctuary, Tasmania, Australia

Suzi Eszterhas / Common Wombat (Vombatus ursinus) orphan met by children, Bonorong Wildlife Sanctuary, Tasmania, Australia

Suzi Eszterhas / Common Wombat (Vombatus ursinus) orphan with sanctuary director, Greg Irons, Bonorong Wildlife Sanctuary, Tasmania, Australia

Suzi Eszterhas / Pygmy Three-toed Sloth (Bradypus pygmaeus) biologist, Rebecca Cliffe, taking hair samples, Isla Escudo de Veraguas, Panama

Vincent Grafhorst / Man looking into crater at night, Mount Nyiragongo, Virunga National Park, Democratic Republic of the Congo

Sebastian Kennerknecht / Mountain Lion (Puma concolor) biologist, Paul Houghtaling, using telemetry to track mother and cubs near houses, Santa Cruz Puma Project, Santa Cruz, Monterey Bay, California

Suzi Eszterhas / Sea Otter (Enhydra lutris) three week old orphaned pup being bottle-fed, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) three week old orphaned pup holding caretaker finger, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) caretaker, Deanna Troeauga, bottle-feeding three week old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) three week old orphaned pup playing with toy, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, carrying three week old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Cyril Ruoso / Giant Cockroach (Blaberidae) and hand, Pacaya Samiria National Park, Peru

Pete Oxford / Red-footed Booby (Sula sula) flying juvenile being photographed by tourist, Genovesa Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) pup and tourist, Galapagos Islands, Ecuador

Pete Oxford / Marine Iguana (Amblyrhynchus cristatus) group photographed by tourist, Fernandina Island, Galapagos Islands, Ecuador

Cyril Ruoso / Chacma Baboon (Papio ursinus) stealing rhubarb from shopper, Cape Town, South Africa. Sequence 2 of 6

Piotr Naskrecki / Yellow Fever Mosquito (Aedes aegypti) female feeding on human blood, Gorongosa National Park, Mozambique

Pete Oxford / Buttress root in rainforest with photographer Pete Oxford standing beneath it, Sacha Lodge, Amazon Rain Forest, Ecuador

Michio Hoshino / Polar Bear (Ursus maritimus) pair investigate tourists inside a cage, Churchill, Manitoba, Canada

Stephen Belcher / Takahe (Porphyrio mantelli) being located using radio telemetry, New Zealand

Stephen Belcher / Takahe (Porphyrio mantelli) population numbers displayed in chart on computer screen, New Zealand

Stephen Belcher / Takahe (Porphyrio mantelli) chicks being inspected by researchers at Burwood Breeding Center, Te Anau, New Zealand

Stephen Belcher / Takahe (Porphyrio mantelli) chick being weighed by researcher, Burwood Breeding Center, New Zealanad

Jasper Doest / Black-tailed Godwit (Limosa limosa) chick being measured for research, Netherlands

Jasper Doest / Black-tailed Godwit (Limosa limosa) chicks being banded for research, Netherlands

Will Watson / View of Worcester Cathedral with flooded road in the foreground, Worcester, England, UK, February 2014.

Will Watson / View of floodwater outside the Severn View Hotel, with cyclists, Worcester, England, UK, February 2014.

Christophe Courteau / Tourists with a guide on an ecotourism trekking holiday, Svalbard, Norway, June, 2012. Model released.

Christophe Courteau / Landscape photographer taking a picture of the view across the Liefdefjorden, towards the Monacobreen Glacier, Spitzbergen, Svalbard, Norway, June, 2012. Model released.

Sandesh Kadur / Group of veterinary surgeons around a tranquilized Sloth bear (Melursus ursinus) at the Wildlife SOS Rehabilitation Centre, Bannerghatta National Park, Karnataka, India, 2009.

Juan Carlos Munoz / Toursists in a boat moving up the River Kinabatangan through lowland rainforest, Sabah, Malaysia, Borneo.

Merryn Thomas / Viewing platform on the summit of the Schilthorn (2,970m), Bernese Oberland, Switzerland, June 2012.

Visuals Unlimited / Moon jellyfish (Aurita aurita) and snorkeler, Jellyfish Lake, Micronesia, Palau

Visuals Unlimited / Government officials and locals keeping eyes on Hawaiian monk seal (Monachus schauinslandi) basking at boat ramp, young male, critically endangered, Honokohau Harbor, Kona Coast, Big Island, Hawaii, P...

Visuals Unlimited / Person holding a stick in the open mouth of a Namib Horned Adder (Bitis caudalis) to show the fangs of the venomous viper, Namib-Naukluft National Park, Namibia

Flip Nicklin / Sperm Whale (Physeter macrocephalus) researchers Steve Dawson and Elizabeth Slooten using hydrophones to listen to whale vocalizations, New Zealand

Kevin Schafer / Northern Elephant Seal (Mirounga angustirostris) researcher marking large bull, Farallon Islands, California