David Kjaer / Great Bustard (Otis tarda) calling on Salisbury Plain, part of a reintroduction project with birds imported under DEFRA licence from Russia. Salisbury Plain, Wiltshire, England. November. Wing tags di...

David Kjaer / Great Bustard (Otis tarda) calling, Salisbury Plain, part of a reintroduction project with birds imported under DEFRA licence from Russia. Salisbury Plain, Wiltshire, England. November. Wing tags digi...

David Kjaer / Great Bustard (Otis tarda) in flight, Salisbury Plain, part of a reintroduction project with birds imported under DEFRA licence from Russia. Salisbury Plain, Wiltshire, England, October 2012. Wing tag...

David Kjaer / Great Bustard (Otis tarda) Salisbury Plain, part of a reintroduction project with birds imported under DEFRA licence from Russia. Salisbury Plain, Wiltshire, England, October 2012. Wing tags digitally...

Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram flehming to see if female is in heat, western Montana

David Pattyn / Coot (Fulica atra) pair mating, the female often is almost completely submerged, you can only see small part of her back here, La Dombes lake area, France, April

Anup Shah / African harrier hawk (Polyboroides typus) investigating a cavity to see if there is a nest to steal eggs from, Masai Mara National Reserve, Kenya. March

Ingo Arndt / Gliding Leaf Frog (Agalychnis spurrelli) eye closed with semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) eye closed with semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica

Mark Carwardine / Stephen Fry and Mark Carwardine in Nosy Mangabe, north-east Madagascar, while filming for BBC TV series 'Last Chance to See', October 2008

Mark Carwardine / Stephen Fry watching a Dwarf chameleon at Nosy Mangabe, north-eastern Madagascar, while filming BBC TV series 'Last Chance to See', October 2008

Mark Carwardine / Stephen Fry with Spectacled caiman at night, filming BBC TV series 'Last Chance to See' in the Brazilian Amazon, Jan 2008

Christophe Courteau / Group of black herons (Egretta ardesiaca) on the Okavango Detla, Botswana. The birds' wings form an umbrella over the water so that they can see and hunt fish more easily

Christophe Courteau / Two black herons (Egretta ardesiaca) on the Okavango Detla, Botswana. The birds' wings form an umbrella over the water so that they can see and hunt fish more easily.

Kerstin Hinze / Aerial view of Ostseebad Damp, Nature Reserve Schwansener See and harbour, Baltic Sea, Schleswig-Holstein, Germany, July 2012

Charlie Summers / Wildbeest (Connochaetes taurinus) as far as the eye can see from Naabi Hill, gathering and migrating to short grass plains to the south, Serengeti National Park, Tanzania. This year, 2012, there were...

Sandra Bartocha / European White Water Lily (Nymphaea alba) leaves floating on surface of the lake Granziner See, Muritz National Park, Germany August 2008

Sandra Bartocha / European White Water Lily (Nymphaea alba), on the lake Granziner See, Muritz National Park, Germany. August 2008

Sandra Bartocha / Furstenseer See / Lake at dusk, Muritz National Park, Germany, October

Sandra Bartocha / Wanzkaer See / lake with water lily leaves, Mecklenburg-Vorpommern, Germany, May

Sandra Bartocha / Wanzkaer See / lake with waterlily leaves, Mecklenburg-Vorpommern, Germany, May

Sandra Bartocha / Marsh area with reeds and swan in background, Galenbecker See, Germany. April 2009

Sandra Bartocha / Furstenseer See / Lake, with reflections of clouds, Muritz National Park, Germany, May

Sandra Bartocha / Furstenseer See / Lake, Muritz National Park, Germany, May

Terry Whittaker / 2020VISION / Stag Beetle (Lucanus cervus) in defensive posture; male in garden where it emerged naturally. Kent, UK, June. Controlled situation. Did you know? Stag Beetles stay still when they see a large object a...

Alex Mustard / 2020VISION / Common cuttlefish (Sepia officinalis) male closely guarding his female mate, caressing her with his tentacles as he displays to a rival male in the background, Babbacombe Bay, Devon, UK, English Chann...

Peter Cairns / 2020VISION / Logo of Brigadoon, a tourist boat operator specialising in trips to see White-tailed sea eagle, Portree, Skye, Inner Hebrides, Scotland, UK, June

Hanne & Jens Eriksen / See-see partridge (Ammoperdix griseogularis) with pebble in beak, introduced species, UAE, November

Hanne & Jens Eriksen / Male See-see partridge (Ammoperdix griseogularis) introduced species, UAE, November

Eric Baccega / Helicopter bringing tourists to see Harp seals (Phoca groenlandicus) on sea ice, Magdalen Islands, Gulf of St Lawrence, Quebec, Canada, March 2012

Florian Möllers / Aerial view of the River Havel close to the lake Guelper See. Brandenburg, Germany, August 2009.

Ernie Janes / Boat taking tourists out to see the seals on Blakeney Point, Morston Quay, Norfolk, UK, July

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli), spyhopping to see where seal is on ice floe, Antarctica. Taken on location for BBC Frozen Planet series, Ja...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli), spyhopping to see where seal is on ice floe, with birds flying above, Antarctica. Taken on location for BBC...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli), spyhopping to see where seal is on ice floe, Antarctica. Taken on location for BBC Frozen Planet series, Jan...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) spyhops to see if Crabeater seals (Lobodon carcinophagus) are potential prey, Antarctica. Taken on location for BBC Frozen Planet series, January 2009

Peter Cairns / 2020VISION / Van advertising trips to see White tailed sea eagles, Portree, Skye, Inner Hebrides, Scotland, UK, June 2011

Peter Cairns / 2020VISION / Van advertising trips to see White tailed sea eagles, Portree, Skye, Inner Hebrides, Scotland, UK, June 2011

Nick Upton / 2020VISION / 'Squidgy' an 18 month female Common / Eurasian crane (Grus grus) dancing in Barley stubble near two males 'Mennis' and 'Bart', within the flock of birds released by the Great Crane Project onto the So...

Piotr Naskrecki / Wellington Weta (Hemideina crassidens) group in tree which is cut and fit with glass to allow tourists to see inside, Karori, New Zealand

Ernie Janes / Farmer holding wheat ears in hands checking to see if crop (Tricium aestivum) is ready for harvest, Metton, Norfolk, UK, August

Lisa Hoffner / Children visiting David Sheldrick Wildlife Trust Nairobi Elephant Nursery to see a baby Elephant (Loxodont africana). Kenya, July 2010.

Peter Cairns / 2020VISION / Photographer waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Scotland, UK, August 2010

Peter Cairns / 2020VISION / Dog playing in water whilst people wait on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Peter Cairns / 2020VISION / People waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Peter Cairns / 2020VISION / People waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Peter Cairns / 2020VISION / People waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Peter Cairns / 2020VISION / People waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Peter Cairns / 2020VISION / People waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Peter Cairns / 2020VISION / People waiting on Chanonry Point beach hoping to see dolphins, Fortrose, Moray Firth, Lothian, Scotland, UK, August 2010

Bernard Castelein / Grasshopper Warbler (Locustella naevia) calling. Dummer See, Niedersachsen, Germany, May.

Eric Dragesco / Male Markhor (Capra falconeri) following a female scenting to see if she is receptive. Tajikistan, Central Asia, November.

Florian Möllers / Tracks of European beaver (Castor fiber albicus) and Red fox (Vulpes vulpes) in snow on ice at the edge Lake Tegeler See, Berlin, Germany, February

Anup Shah / African Lion male (Panthera leo) checking to see whether a lioness wants to mate, Masai Mara National Reserve, Kenya. March. Sequence 1/2

Roberto Rinaldi / The ceiling of wrecked crude oil super-tanker "Amoco Milford Haven", on which it is still possible to see crude oil. The tanker sank on April 14th, 1991 after three days of fire. Genoa, Italy, 2007.

Edwin Giesbers / Tourists visiting the Farne Islands, Northumberland, UK to see the colonies of nesting seabirds, June 2008

Bryan and Cherry Alexander / Male Polar bear (Ursus maritimus) standing to see tourists on Tundra Buggy. Churchill, Manitoba, Canada, 1988.

Mark Carwardine / Presenters Mark Carwardine and Stephen Fry on location for television programme 'Last Chance to See: Return of the Rhino', Ol Pejeta Conservancy, Kenya, 2010.

Mark Carwardine / Presenters Mark Carwardine and Stephen Fry on location for television programme 'Last Chance to See: Return of the Rhino', Ol Pejeta Conservancy, Kenya, 2010.

Mark Carwardine / Presenters Mark Carwardine and Stephen Fry with Northern White rhinoceros (Ceratotherium simum) on location for television programme 'Last Chance to See: Return of the Rhino', Ol Pejeta Conservancy, K...

Owen Newman / Red kangaroo {Macropus rufus} male testing to see if female is in oestrus, Sturt NP, New South Wales, Australia

Juergen Freund / Richard Fitzpatrick and Dr. Jamie Seymour in their research boat collecting Box jellyfish (Chiropsalmus sp) at night using strong lights to attract and see them, Australia. 2008

Colin Monteath / Factory chimneys belch smoke, winter smog makes it hard to see houses between trees, Christchurch, Canterbury, New Zealand

Juergen Freund / Fantasea Pontoon anchored 365 days per year at the Hardy Reef for guests to see the Great Barrier Reef underwater world, Reefworld-Reefsleep, Queensland, Australia

Juergen Freund / Quicksilver Pontoon with tourists helmet diving to see marine wildlife, Great Barrier Reef, Queensland, Australia 2006

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas), the golden webbed skin is a nictitating membrane, part of the eye lid and enables the frog to see without giving up its camouflage

Pete Oxford / Pig snout peering out under a door - the domestic animals live in pens within the courtyard of the houses. These pigs have chewed through the woodwork so that they can see out. Naxi Village near Lijia...

Pete Oxford / Two Pig snouts peering out under door - the domestic animals live in pens within the courtyard of the houses. These pigs have chewed through the woodwork so that they can see out. Naxi Village near Li...

Piotr Naskrecki / Red-eyed Tree Frog (Agalychnis callidryas) semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica

Mike Wilkes / Black heron fishing (Egretta ardesiaca), these birds use their wings to create shade so they can see fish below in water, Abuku NR, Gambia

Dan Burton / Tourists in Safari truck to see animal in Simunye Zulu Lodge Game Reserve, South Africa

Duncan Mcewan / Cherry gall cut away to see wasp larvae (Cynips quercusfolii). Scotland, UK, Europe

Paul Johnson / Beached Sperm Whale, Heacham, Norfolk, England (Physeter macrocephalus)

Mark Moffett / Goat Fly (Phytalmia mouldsi) professor Gary Dodson adds extensions onto a male's antlers to see if this increases his success in battle, Ball State University, Indiana

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) nocturnal, red eyes help it see in darkness, Panama rainforest

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) pair on leaf, nocturnal, red eyes help it see in darkness, Panama

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) portrait on red leaf, nocturnal, red eyes help it see in darkness, Panama rainforest

Tim Edwards / Stromatolites (oldest known forms of life). Nambung NP, Western Australia

Jami Tarris / Bactrian Camel (Camelus bactrianus) fair, with competition of speed to see who can insert wooden nose pegs in the nose of a wild camel, Gobi Desert, Mongolia

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) researcher Karl Mayer looking at stranded otter to see if it needs rescuing, Monterey, Monterey Bay, California

D. Parer & E. Parer-Cook / Tasmanian Devil (Sarcophilus harrisii) two year old female investigating Eastern Grey Kangaroo (Macropus giganteus) male to see if it can be preyed upon, Central Highlands, Tasmania, Australia. Sequen...

D. Parer & E. Parer-Cook / Tasmanian Devil (Sarcophilus harrisii) two year old female investigating Eastern Grey Kangaroo (Macropus giganteus) male to see if it can be preyed upon, Central Highlands, Tasmania, Australia. Sequen...

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) eye half covered with semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica

Paul D Stewart / Reconstruction of the neanderthal 'Man of Chapelle-Aux Saints' by Mr. Kupka (scientifically advised by Marcellin Boule) for the Illustrated London News (ILN), Feb 27th, 1909. This image stuck with the...

Paul D Stewart / Reconstruction of the neanderthal 'Man of Chapelle-Aux Saints' by Mr. Kupka (scientifically advised by Marcellin Boule) for the Illustrated London News (ILN), Feb 27th, 1909. This image stuck with the...

Paul D Stewart / Illustration of Orangutan (Pan pygmaeus), January 1838, Jenny the first Orangutan in London zoo. Full publication details in image. On 28 March 1838, Charles Darwin came to the London Zoo to visit Jen...

Paul D Stewart / Illustration portrait of a Chimpanzee (Pan troglodytes). 1809 'Black Oran Otan' copper engraving from 'Zoological Lectures Delivered at the Royal Institution'. This is a reprint of Tyson's first figur...

Paul D Stewart / Portrait of Thomas Jefferson, polymath, American Founding Father and President (b. 13 April 1743 - d. 4 July 1826). Engraving by W.Holl in 'The Gallery of Portraits' 1837 with later colouring, after p...

Paul D Stewart / Portrait of James Cook, Captain of HMS Barc Endeavour (b. 7th November 1728 - d. 14th February 1779); steel engraving by E. Scriven 1833 with later hand colouring, after the painting by N. Dance 1775/...

Paul D Stewart / Illustration of Death's Head Hawk Moth (Acherontia atropos), 1744, by August Johann Roesel von Rosenhof copperplate art and engraving with his own handcolouring and plate correction. From 'Der monatli...

Paul D Stewart / Illustration of Death's Head Hawk Moth (Acherontia atropos) by August Johann Roesel von Rosenhof with his own copperplate, handcolouring and plate correction, 1744. From 'Der monatlich-herausgekommene...

Paul D Stewart / Illustration of extinct fossil giant salamander (Andrias sheuchzeri), first named as Homo diluvii testis (evidence of a diluvian human or witness of the flood) from the work of Johann Jakob Scheuchzer...

Paul D Stewart / Illustrationg of great white shark jaw with fossil shark teeth, copperplate after Nicolas Steno 1667. Steno produced a book 'Head of a shark dissected' from his dissection of a great white shark caugh...

Paul D Stewart / Illustration of mythical Papio and man-headed beast. Published in Amsterdam in 1673 by Jacob Von Meurs for Arnoldus Montanusa 'De Nieuwe en Onbekende Weereld' after the first book related to America b...