Phil Savoie / Red eyed tree frog on heliconia (Agalychnis callidryas)

Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) male looking down from branch. Sahamalaza, Madagascar.

Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) female in tree. Sahamalaza, Madagascar.

Patricio Robles Gil / Kashir grey langur (Semnopithecus ajax) Dachigam National Park, Jammu & Kashmir, India.

Piotr Naskrecki / Hairy Big-eyed Bat (Chiroderma villosum) flying, Costa Rica

Piotr Naskrecki / Red-eyed Tree Frog (Agalychnis callidryas), Belize

David Fleetham / White-eyed moray eel (Muraena thyrsoides) close to Zebra lionfish (Dendrochirus zebra), Philippines.

David Fleetham / Pair of White-eyed moray eels (Muraena thyrsoides) share the hole of a mooring block off Bali, Indonesia.

Ralph Pace / Silky Shark (Carcharhinus falciformis), Galapagos Shark (Carcharhinus galapagensis), Dusky Shark (Carcharhinus obscurus), and Black-tip Shark (Carcharhinus limbatus) group working with Yellowfin Tuna...

Ralph Pace / Silky Shark (Carcharhinus falciformis), Galapagos Shark (Carcharhinus galapagensis), Dusky Shark (Carcharhinus obscurus), and Black-tip Shark (Carcharhinus limbatus) group working with Yellowfin Tuna...

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) close- up of eye half open, the golden webbed semi-transparent eyelid allows to see its surrounding even while resting, Costa Rica.

Ingo Arndt / Close up of foot and eye of Red eyed tree frog {Agalychnis callidryas}

Ingo Arndt / Red eyed tree frog portrait {Agalychnis callidryas} Central America

Nick Garbutt / Female Red-eyed Tree Frog (Agalychnis callidryas) - Caribbean slope race (blue flanks) - obscured in rainforest foliage. Mid-altitude rainforest near Aranal, central Costa Rica.

Nick Hawkins / Red-eyed treefrog (Agalychnis calidryas) Costa Rica, April 2015.

Alex Hyde / Silk moth (Automeris zugana) sequence 1 of 2, photographed on a white background in mobile field studio, Cordillera de Talamanca mountain range, Caribbean Slopes, Costa Rica.

Alex Hyde / Silk moth (Automeris zugana) sequence 2 of 2, with wings open to reveal eyespots, a means of deterring predators, photographed on a white background in mobile field studio, Cordillera de Talamanca mou...

Donald M. Jones / Dark-eyed Junco (Junco hyemalis), western Montana

Edwin Giesbers / Blue-eyed / Sclater's black lemur (Eulemur flavifrons) male with arm on female's back, captive, endemic to Madagascar., Critically Endangered.

Alan Murphy / Red-eyed Vireo (Vireo olivaceus), Texas

Avi Meir / White-eyed Gull (Larus leucophthalmus) flying, Eilat, Israel

Markus Varesvuo / Jack snipe (Lymnocryptes minimus), Uto, Finland, November.

Andy Trowbridge / Two Yellow-eyed penguin (Megadyptes antipodes) chicks standing together. Otago Peninsula, Otago, South Island, New Zealand, January. Endangered Species.

Andy Trowbridge / Four Yellow-eyed penguins (Megadyptes antipodes) walking up a sand dune towards their nests, Otago Peninsula, Otago, South Island, New Zealand. September. Endangered Species.

Andy Trowbridge / Yellow-eyed penguin (Megadyptes antipodes) walking up a sand dune towards its nest. Otago Peninsula, Otago, South Island, New Zealand. February. Endangered Species.

Sean Crane / Red-eyed Tree Frog (Agalychnis callidryas) calling, Tortuguero National Park, Costa Rica

Alex Mustard / World War II British motorbikes (Norton 16H) stacked up on the back of truck in the hold of wreck of HMS Thistlegorm, with soldierfish (Myripristis murdjan) swimming above. Sha'ab Ali, Sinai, Egypt. R...

Alex Mustard / World War II British motorbikes (Norton 16H) stacked up on the back of truck in the hold of wreck of HMS Thistlegorm, with Soldierfish (Myripristis murdjan) swimming above. Sha'ab Ali, Sinai, Egypt. R...

Robert Thompson / Owlfly sulphur (Libelloides coccajus) on flower, near Gavarnie, Pyrenees National Park, France, June.

Robin Chittenden / Boy looking at Green-veined White butterfly (Pieris napi) on his hand, Dorset, UK, May 2013, Model released.

Jan Wegener / White-eyed Duck (Aythya australis) male flapping, Australia

Chris Mattison / Red-eyed leaf frog (Agalychnis callidryas) from Central America

Konrad Wothe / Foureyed fish (Anableps anableps) split level view, South America, captive

Bert Willaert,Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) showing how it got its name - eye spots on the back of it's body, Chile, December,. Controlled conditions,

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) at waters edge, with reflection, Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Portrait of Red-eyed tree frog (Agalychnis callidryas) with reflection, Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Mark Hamblin / 2020VISION / Male Red eyed damselfly (Erythromma najas) on Purple loosestrife (Lythrum salicaria) flower, Bedfordshire, England, UK, July 2012.

Ole Jorgen Liodden / Yellow-eyed Penguin (Megadyptes antipodes) endangered specie, Auckland Island, New Zealand. November.

Andy Trowbridge / Yellow-eyed Penguins (Megadyptes antipodes) vocalising with chick. Endangered species. Katiki Point, Moeraki, Otago, New Zealand. January.

Andy Trowbridge / Yellow-eyed Penguin (Megadyptes antipodes) or Hoiho calling. Katiki Point, Moeraki, Otago, South Island, New Zealand. January. Endangered species

Daniel Heuclin / Kramer's / Large Eyed Pit Viper (Cryptelytrops / Trimeresurus macrops). Captive. Endemic to South East Asia.

Juergen Freund / Two Twinspot / Crabeye gobies (Signigobius biocellatus) West New Britain, Papua New Guinea.

Juergen Freund / Eyed / Leopard sea cucumber (Bohadschia argus), close-up of the skin. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on an Eyed / Leopard sea cucumber (Bohadschia argus). Lembeh Strait, North Sulawesi, Indonesia

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on an Eyed / Leopard sea cucumber (Bohadschia argus). Lembeh Strait, North Sulawesi, Indonesia.

Mark Taylor / Portrait of a young Little Owl (Athene noctua).

Juan Carlos Munoz / Imperial shag / Blue eyed cormorant colony (Phalacrocorax atriceps), showing birds on nests, with one bird flying above. Patagonia, Argentina, March 2008

Kim Taylor / Three-eyed Iguanid Lizard (Chalarodon madargascariensis) portrait standing.

Steve Gettle / Dark-eyed Junco (Junco hyemalis) on branch with frozen berries, North America

Tim Laman / Head portrait of a Wild Western / Sunda tarsier (Tarsius bancanus) on tree trunk at night. Danum Valley Conservation Area, Borneo, Sabah, Malaysia

Kristel Richard / Close up of the curved ears of a rare Cremello Kathiawari mare with young Indian boy riding her, in Jasdan, Gujarat, India. The pink points on her head are tradionally put by women during ceremonies,...

Neil Lucas / Weddell seal (Leptonychotes weddellii) male surfacing in ice hole, McMurdo Sound, Ross Sea, Antarctica, November 2008

Stephen Dalton / Red-eyed tree frog (Agalychnis callidryas) leaping to catch cricket, Central America, controlled conditions

Robert Thompson / Red-eyed tree frog {Agalychnis callidryas} resting in Bromeliad flower, Nicaragua, June

Wild Wonders of Europe / Banfi / Wide-eyed flounder (Bothus podas) on seabed, Marine Reserve, Monaco, Mediterranean Sea, July 2009

Stephen Dalton / Red eyed tree frog (Agalychnis callidryas) on Bromeliad leaf, Central America, controlled conditions

Stephen Dalton / Red eyed tree frog (Agalychnis callidryas) climbing up plant stems, controlled conditions, from Central America

Mark Bowler,Mark Bowler / Red eyed tree frog (Agalychnis callidryas) walking, digital composite Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) close-up of head Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) sitting on bamboo, digital composite Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) sitting

Mark Taylor / Silver tabby kitten with big eyes.

Tim Laman / Orange / Red eyed treefrog (Litoria chloris) in the rainforest of the Atherton Tablelands, Queensland, Australia

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas), Laguna del Lagarto, Boca Tapada, Costa Rica

Juergen Freund / Crab eyed goby (Signigobius biocellatus) Indo-pacific

Tim Laman / Red-eyed tree frog (Agalychnis callidryas). Piedras Blancas National Park, Esquinas Rainforest Lodge, Costa Rica.

Tim Fitzharris / Red-eyed Tree Frog (Agalychnis callidryas), Costa Rica

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas), Cahuita National Park, Costa Rica

Edwin Giesbers / Red eyed tree frog (Agalychnis callidryas) portrait, Costa Rica

Edwin Giesbers / Red eyed tree frog (Agalychnis callidryas) looking over the edge of a leaf, Costa Rica

Edwin Giesbers / Red eyed tree frog (Agalychnis callidryas) on Heliconia flower, Costa Rica

Fabio Liverani / European Edible Frog (Rana esculenta) eating a Green eyed hook tailed dragonfly (Onychogomphus forcupatus) amongst pond weed, Grigne Mountains, Lombardia Region, Italy

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas) on Heliconia (Heliconia sp) flower, Cahuita National Park, Costa Rica

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas) on Heliconia (Heliconia sp) flower, Cahuita National Park, Costa Rica

Jane Burton / Odd-eyed Border Collie pup, 12 weeks old, lying with black and white kitten, 6 weeks old

Tim Fitzharris / Red-eyed Tree Frog (Agalychnis callidryas) three sitting on Heliconia (Heliconia sp), Costa Rica, Digital composite

Tim Fitzharris / Red-eyed Tree Frog (Agalychnis callidryas) climbing on flower, Costa Rica

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) three males sitting on a stem, Soberania National Park, Panama

Piotr Naskrecki / Malagasy Web-footed Frog (Boophis luteus) clinging to limb, Madagascar

David Kjaer / Red eyed tree frog {Agalychnis callidryas} perching on leaf, Captive.

Kim Taylor / Golden-eyed Horse Fly (Chrysops quadratus), close-up of eyes. UK

Doug Perrine / Grey faced / White eyed moray eel {Siderea thyrsoidea} and Bleeker's parrotfish sleeping wrapped in mucus.

Phil Savoie / Red eyed tree frog legs - leaping from Heliconia - Sequence 2 (Agalychnis callidryas)

Kim Taylor / Eyed ladybird {Adalia ocellata} taking off. UK.

Pete Oxford / Maroon eyed leaf frogs {Agalychnis litodryas} Esmeraldas, Ecuador

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas) portrait, native to Central and South America