Pete Oxford / Yellow-spotted / Side Necked River Turtle (Podocnemis unifilis) tracks across sand, left by a female searching for a suitable place to lay eggs. Guarico Province, Venezuela.

Pete Oxford / Yellow-spotted / Side Necked River Turtle (Podocnemis unifilis) tracks across sand, left by a female searching for a suitable place to lay eggs. Guarico Province, Venezuela.

Diane McAllister / American mink (mustela vison) standing on a frozen pond while searching for food. USA, February

Eric Dragesco / A man sitting on a snowy hill above a valley searching landscape with binoculars for wildlife, Naryn National Park, Kyrgyzstan, Central Asia, November.

Juergen Freund / Diver inspecting a Fan coral (Muricella sp) searching for Pygmy seahorses that live camouflaged among the branches. Misool, Raja Ampat, West Papua, Indonesia, January 2010.

Juergen Freund / Researcher Guido Westhoff checking out a massive termite mound searching for snakes. Queensland, Australia, February 2008

JEFF FOOTT / Working Elephants drinking from river at the end of the day after searching for and darting Indian / Asian rhinoceros (Rhinoceros unicornis) for sedation and translocation to Royal Bardia NP, Chitwan...

JEFF FOOTT / Scientists and dart shooter on Elephant searching for Indian / Asian rhinoceros (Rhinoceros unicornis) for sedation and translocation to Royal Bardia NP, Chitwan NP, Nepal, 2003

Markus Varesvuo / Ringed Plover (Charadrius hiaticula) searching for food on shoreline, Finland, July

Markus Varesvuo / Redshank (Tringa totanus) wading through shallow water searching for food, Finland, May

Markus Varesvuo / Green sandpiper (Tringa ochropus) wading through shallow water searching for food, Loviisa, Finland, June

Markus Varesvuo / Green Sandpiper (Tringa ochropus) searching for food on shoreline, Finland, July

Jouan & Rius / Photographer, Catherine Jouan, searching for nocturnal animals in rainforest, Borneo, Sarawak, Malaysia. Model released

Jouan & Rius / Photographer, Catherine Jouan, searching for nocturnal animals in rainforest, Borneo, Sarawak, Malaysia. Model released

Jouan & Rius / Termites (Hospitalitermes sp) searching for food in wood, rainforest, Borneo, Sarawak, Malaysia

Bruno D'Amicis / Three-toed Woodpecker (Picoides trydactilus) searching for Bark Beetle (Curculionidae). Western Tatras, Slovakia, April.

Bruno D'Amicis / Marks made by Brown Bear (Ursus arctos) searching for invertebrates in rotten log. West Tatras, Slovakia, September.

Bruno D'Amicis / Three-toed Woodpecker (Picoides trydactilus) searching for Bark Beetle (Curculionidae). Western Tatras, Slovakia, April.

Charlie Summers / Aardwolf (Proteles cristatus) searching for termite prey, Serengeti NP, Tanzania, East Africa

Jenny E. Ross / A Kermode / Spirit bear (Ursus americanus kermodei) searching for salmon in a shallow stream during a rain storm in the Great Bear Rainforest, British Columbia, Canada.

Anup Shah / Common sandpiper (Actitis hypoleucos) searching for insects on the back of a Hippopotamus (Hippopotamus amphibius) Masai Mara National Reserve, Kenya. February

Anup Shah / Common sandpiper (Actitis hypoleucos) searching for insects on the back of a Hippopotamus (Hippopotamus amphibius) Masai Mara National Reserve, Kenya. February

Charlie Summers / Adelie Penguin (Pygoscelis adeliae) with Krill stains on its white front, searching for small rocks to add to its nest. Petermann Island, Antarctica.

Angelo Gandolfi / Brown Bear (Ursus arctos) searching for food in industrial rubbish bins, Brasov, South Carpathian mountains, Romania

Angelo Gandolfi / Brown Bear (Ursus arctos) searching for food in industrial rubbish bins, Brasov, South Carpathian mountains, Romania

Angelo Gandolfi / Brown Bear (Ursus arctos) searching for food in industrial rubbish bins, Brasov, South Carpathian mountains, Romania

Laurent Geslin / Urban Wild boar (Sus scrofa) searching for food on the streets of Barcelona at night, with man photographing behind, Spain, August

Laurent Geslin / Urban Wild boar (Sus scrofa) searching for food in Barcelona, Spain

Laurent Geslin / Group of adult and young Wild boars (Sus scrofa) searching for food on a street in Barcelona, Spain

Laurent Geslin / Group of Wild boars (Sus scrofa) searching for food at night on a street in Barcelona, Spain

Laurent Geslin / Wild boar (Sus scrofa) searching for food on a street with people watching nearby. Barcelona, Spain

Michel Poinsignon / Jay (Garrulus glandarius) searching for insects in rotting, Lorraine, France, March

Michel Poinsignon / Brambling (Fringilla montifringilla) male in winter searching for food, Lorraine, France, January

Nick Upton / Yellow Dung Fly (Scathophaga stercoraria) portrait of male searching for female on a cow pat. Wiltshire, UK, April.

Nick Upton / Cuckoo bee (Melecta albifrons) a parasite of Hairy-Footed Flower Bees (Anthophora plumipes) and other masonry bees, searching an old wall for host nests. Brandenburg, Germany, April.

Nick Upton / Common Bee fly (Bombylius major) searching for solitary bee nest holes to parasitise. Wiltshire garden, UK, May.

Nick Upton / Common Bee Fly (Bombylius major) searching for solitary bee nest holes to parasitise. Wiltshire, UK, April.

Andy Sands / Skylark (Alauda arvensis) searching for insects on ground, Isle of Coll, Scotland, UK, June

Yva Momatiuk & John Eastcott / Caribou (Rangifer tarandus) bull searching for lichen in early spring, Alaska

Laurent Geslin / Sparrowhawk (Accipiter nisus) female on woodland floor searching for nesting material during the mating season, urban park Paris, France, Europe, April.

Jeff Wilson / Cameraman Mark Smith working alongside local tracker, searching for Snow leopard (Panthera uncia) whilst on location for BBC Planet Earth series, Mountains episode, 2005

Jeff Wilson / Local scouts looking through binoculars for Snow leopard (Panthera unicia) Chitral, in the Hindu Kush mountains, North West frontier, Pakistan. For BBC Planet Earth series, 2005.

Jeff Wilson / Local scouts searching for Markhor (Capra falconeri) in mountains of Chitral valley, Hindu Kush mountains, North West frontier, Pakistan. For BBC Planet Earth series, 2005

Jeff Wilson / Local scouts and camerman Mark Smith searching for Snow leopard (Panthera uncia) in Chitral National Park, in the Hindu Kush, North West frontier, Pakistan. For BBC Planet Earth series, 2005.

Jeff Wilson / Local scouts and camerman Mark Smith searching for Snow leopard (Panthera uncia) in Chitral National Park, in the Hindu Kush, North West frontier, Pakistan. For BBC Planet Earth series, 2005.

Jeff Wilson / Local scout searching for Snow leopard (Panthera uncia) in the Hindu Kush, North West frontier, Pakistan. For BBC Planet Earth series, 2005.

Jeff Wilson / Cameraman Barry Britton with local guides searching for migrating Demoiselle Cranes (Anthropoides virgo) in the Kali Gandaki Valley, Nepal, for BBC Planet Earth series, 2005

Pete Oxford / Gentoo Penguin (Pygoscelis papua) searching for stones to be used as courtship gift. Sea Lion Island. South of mainland east Falkland Island. Falkland Islands

Aflo / ic-03406 Dalmation looking alert.

Xi Zhinong / Golden Snub-nosed Monkey (Rhinopithecus roxellana) group searching for corn seeds, Qinling Mountain, Shaanxi Province, China

Jeff Rotman / Whitetip Reef shark (Triaenodon obesus) searching for food, Cocos Island, Costa Rica, Pacific Ocean.

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) searching for water around steaming fumaroles during prolonged dry season, Isabella Island, Galapagos Islands, Ecuador

Roger Powell / Sanderling (Calidris alba) searching for food along the tideline, Boulmer, Northumberland, UK

Steven Kazlowski / Polar bear (Ursus maritimus) traveling the coast, searching for food in summer, Svalbard, Norway

Steven Kazlowski / Portrait of Polar bear (Ursus maritimus) traveling the coast, searching for food in summer, Svalbard, Norway

Jeff Rotman / Diver searching with a sandblaster and magnetic hit during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987

Jeff Rotman / Diver searching with a sandblaster and magnetic hit during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987

Jeff Rotman / Diver searching with a sandblaster and magnetic hit during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987

Jeff Rotman / Sandblaster searching and blowing a magnetic hit during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987, model released

Jeff Rotman / Sandblaster searching and blowing a magnetic hit during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987. model released Model released.

Jeff Rotman / Divers searching a hole in the sand after blowing a magnetic hit with a sandblaster during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987. model release...

Jeff Rotman / Divers operate a sandblaster searching and blowing a magnetic hit during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987, model released

David Woodfall / Adults and children searching for recyclable objects in landfill site, Dhaka, Bangladesh, November 2008

David Woodfall / Scheme for providing tea for people searching landfill site for recyclable objects, Dhaka, Bangladesh, November 2008

David Woodfall / Adults and children searching for recyclable objects in landfill site, Dhaka, Bangladesh, November 2008

David Woodfall / Children searching for recyclable objects in landfill site, Dhaka, Bangladesh, November 2008

David Woodfall / Adults and children searching for recyclable objects in landfill site, Dhaka, Bangladesh, November 2008

David Woodfall / Street children searching for recyclable objects at landfill, Dhaka, Bangladesh, November 2008

David Woodfall / Adult and child searching for recyclable objects in landfill site, Dhaka, Bangladesh, November 2008

Stephen Dalton / Greater mouse-eared bat (Myotis myotis) searching for insects on the ground, UK, controlled conditions

Uri Golman / Local hunter armed with rifle scouting for Polar Bear ( Ursus Maritimus) Ittoqqortoormiit, Scoresbysund, North East Greenland. March 2009.

Uri Golman / Local hunter scouting for Polar Bear ( Ursus Maritimus) Ittoqqortoormiit, Scoresbysund, North East Greenland. March 2009.

Solvin Zankl / Female Long-tailed / Tisza mayfly (Palingani a longicauda) rise up in the air soon after mating, where they form huge swarms and are out of range from males still searching for mates close to the wate...

Solvin Zankl / Female Long-tailed / Tisza mayfly (Palingani a longicauda) rise up in the air soon after mating, where they form huge swarms and are out of range from males still searching for mates close to the wate...

Solvin Zankl / Mature male Long-tailed / Tisza mayfly (Palingenia longicauda) flying over the Tisza River searching for females that are about to hatch half an hour later than the males. River Tisza, Hungary, Centra...

Patricio Robles Gil / Gelada baboons (Theropithecus gelada) searching for food amongst ecotourism rubbish at campsite, Upper Simien Mountains, Simien Mountains NP, Ethiopia, December 2006

Patricio Robles Gil / Red billed oxpecker {Buphagus erythorhynchus} searching for ticks on leg of Impala, Kruger NP, South Africa

Patricio Robles Gil / Coyote (Canis latrans) searching for food, Yellowstone National Park, Wyoming, USA, February

GEORGETTE DOUWMA / Yellowtail Coris / Clown wrasse (Coris gaimardi) searching for molluscs, crustaceans and urchins in coral rubble. Misool, Raja Ampat, West Papua, Indonesia.

GEORGETTE DOUWMA / Yellowtail Coris / Clown wrasse (Coris gaimardi) searching for molluscs, crustaceans and urchins in coral rubble. Misool, Raja Ampat, West Papua, Indonesia.

Michael Durham / Phorid Fly (Pseudacteon obtusus) female flies above Red Imported Fire Ants (Solenopsis invicta) searching for an ant to implant an egg which eventually kills the ant, the fly is now used to help contr...

Charlie Hamilton James / Kingfisher (Alcedo atthias) adult female searching for fish. Halcyon River, England.

Stephen Dalton / Robin {Erithacus rubecula} searching for insects at base of yew tree, UK

David Tipling / Northern hen harrier {Circus cyaneus} female in flight, looking down, searching for food, Bosque del Apache, New Mexico, USA, January

David Tipling / Little Egret {Egretta garzetta} searching for food, Snettisham RSPB Reserve, Norfolk, UK, August

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) investigating potential nest cavity in Southern Beech (Nothofagus sp) forest, Ushuaia, Tierra del Fuego, Argentina

Roger Powell / Pine Marten {Martes martes} searching for food in woodland, Glen Garry, West-Inverness, Scotland, UK

Wild Wonders of Europe / Campbell / Female Bottlenosed dolphin (Tursiops truncatus) with calf surfacing, patrolling rip-current searching for Salmon / Sea trout, Moray Firth, Nr Inverness, Scotland, May 2008

Roger Powell / Pine Marten {Martes martes} climbing along rotten tree stump searching for food, Glen Garry, West-Inverness, Scotland, UK

Roger Powell / Pine Marten {Martes martes} climbing along rotten tree stump searching for food, Glen Garry, West-Inverness, Scotland, UK

Jabruson / Bush pigs {Potamochoerus porcus} searching mangoire for nuts, Maya Nord Bai, Odzala NP, Congo

Oriol Alamany / Arctic fox (Vulpes / Alopex lagopus) on cliff top searching for seabirds eggs, Saint George Island, Pribilof Islands, Alaska, USA

Alan Williams / Red Squirrel (Sciurus vulgaris) on forest floor searching for food, Formby Red Squirrel reserve, Merseyside, UK, October

Alan Williams / Lapwing (Vanellus vanellus) chick looking searching food at low tide on marshes, Elmley Marshes, Kent, UK, April

Alan Williams / Lapwing (Vanellus vanellus) chick looking searching food at low tide on marshes, Elmley Marshes, Kent, UK, April

Mike Potts / Manx shearwater (Puffinus puffinus) searching for food below the sea surface, off the South coast of Anglesey, North Wales, UK