Juergen Freund / Tasseled scorpionfish (Scorpaenopsis oxycephala), detail of the eye. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Beaufort's crocodilefish (Cymbacephalus beauforti), detail of eye. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Antennae-like appendages / tentacles above the eyes of a Common lionfish (Pterios volitans) on top of the reef. Lembeh Strait, North Sulawesi, Indonesia.

Hiroya Minakuchi / Beaufort's Crocodilefish (Cymbacephalus beauforti) eyes, Borneo, Malaysia

Juergen Freund / Spiny sea star (Gomophia egeriae) on the seabed with cushionstar in background, Lembeh Strait, North Sulawesi, Indonesia

Chris Gomersall / 2020VISION / Close-up of eye of Great blue shark (Prionace glauca) caught by sea anglers in the Irish Sea off Pembrokeshire, Wales, UK, August 2010.

Georgette Douwma / Panther / Leopard flounder (Bothus pantherinus close up of eye, Rinca, Komodo National Park, Indonesia, October

Konrad Wothe / Musk Beetle (Aromia moschata) on Meadowsweet (Filipendula ulmaria) flower, Bavaria, Germany

Pete Oxford / Cushioned Star (Oreaster reticulatus) amid grasses, Belize Barrier Reef, Belize

Pete Oxford / Foureye Butterflyfish (Chaetodon capistratus) juvenile, Belize Barrier Reef, Belize

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) group swimming in fast current during spawning run, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) group swimming in fast current during spawning run, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) group swimming in fast current during spawning run, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Ernie Janes / Attaching a fly prevention eartag to cattle's ear, Yare Valley, Norfolk, UK, June 2008

Ernie Janes / Farmyard chicken (Gallus gallus domesticus) free range, mixed breed, perched on post, Norfolk, UK

Angelo Gandolfi / Montecristo, the Southern coast, Punta Forata. Tuscany Archipelago National Park, Italy. June 2010

LYNN M. STONE / Grizzly Bear (Ursus arctos horribilis) splashing towards shore with a Chum Salmon caught in McNeil River, Alaska, USA, July (Note orange salmon eggs on bear, on its right eye, and dripping into water)

Alex Mustard / Close up of eye and spiracle of Marbled stingray (Taeniurops meyeni). Spiracle allows a ray to breath while resting on the seabed because its mouth and gills are on its underside. Baa Atoll, Maldives....

Alex Mustard / A southern stingray (Hypanus americanus) over a sandbar. Grand Cayman, Cayman Islands. British West Indies. Caribbean Sea.

Alex Mustard / A Whitetip Reef Shark (Triaenodon obesus) hunting Fusilier fish (Caesionidae) at night. Note how the eye is dialated to improve night vision. Ari Atoll, Maldives. Indian Ocean. May

Solvin Zankl / Olive ridley sea turtle hatchling (Lepidochelys olivacea) on its way to the sea. They orient themselves by the brightness of the horizon above the ocean, Ostional beach, Costa Rica, November ^^^ They...

Pete Oxford / Black Piranha (Serrasalmus rhombeus) eye and teeth, Rewa River, Guyana

Paul Harcourt Davies / Silver birch trees (Betula verrucosa) growing around a caldera near Manziana, Lazio , Italy, Europe.

Mark Carwardine / Northern white rhinoceros (Ceratotherium simum cottoni) getting used to the transport crate in Dvur Kralove Zoo, Czech Republic, the day before departure - Dec 2009. Extinct in the wild and only eight...

Bryan and Cherry Alexander / Fish eye photograph of the Polar Pack Ice, with ice floes, leads and meltpools. Arctic Ocean, 1998.

Bryan and Cherry Alexander / North Pole sign at the top of the World. The North Pole, Arctic Ocean, 1998. Digitally composed.

Michel Roggo / Water plants moving in current of a chalk stream, Croatia, October

Michel Roggo / Wide angle aerial view of flooded forest in the rainy season, with aeroplane reflected in the water. Rio Negro, Amazon, Brazil, 1994

Nick Garbutt / Acacia and Ndutu Safari Lodge. Ngorongoro Conservation Area / Serengeti National Park, Tanzania. March 2010.

Nick Garbutt / Acacia and Ndutu Safari Lodge. Ngorongoro Conservation Area / Serengeti National Park, Tanzania. March 2010.

Mark Carwardine / Northern white rhinoceros (Ceratotherium simum cottoni) getting used to the transport crate in Dvur Kralove Zoo, Czech Republic, December 2009, Extinct in the wild, only eight left in captivity, criti...

Aflo / Y-12201 Fish eye view of stars above Mt Fuji, Fujisan, Japan

Jeff Rotman / Close up of the eye of a Picasso Triggerfish (Rhinecanthus assasi) Red Sea, Egypt

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Jeff Rotman / Close up profile view of the eye of juvenile Scalloped Hammerhead shark (Sphyrna lewini) Kane'ohe Bay, Hawaii, Pacific Ocean.

Jeff Rotman / Eye of Tiger shark (Galeocerdo cuvier), nictitating membrane closing to protect eye, Great Barrier Reef, Australia, Coral Sea.

Jeff Rotman / Eye of Whitetip Reef Shark (Triaenodon obesus), nictitating membrane closing to protect eye, Cocos Island, Costa Rica, Pacific Ocean.

Jeff Rotman / Close up of the eye of a Bluespine Unicornfish (Naso Unicornis) Red Sea, Egypt

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Tui De Roy / Volcan Wolf Tortoise (Chelonoidis nigra becki), Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) male on beach, Galapagos Islands, Ecuador

David Woodfall / Cattle skull propped up on agricultural land affected by drought, Madyha Pradesh, India, Asia, November 2008

David Woodfall / Woman pumping water at new well to obtain clean freshwater, shrimp monoculture has lead to salinisation of the original water sources, Ganges delta, Bangladesh, November 2008

David Woodfall / Taj Mahal, tomb of Humayun, Uttar Pradesh, India, Asia, November 2008

David Woodfall / Well in agricultural land, Madhya Pradesh, India, November 2008

David Woodfall / Taj Mahal, fish eye lens, tomb of Humayun, Uttar Pradesh, India, November 2008

David Woodfall / Taj Mahal with pond in foreground, tomb of Humayun, Uttar Pradesh, India, November 2008

Dan Burton / Saami reindeer herdsman tagging Reindeer (Rangifer tarandus) in enclosure, Lapland, Sweden, November 2009

Dan Burton / Saami reindeer herdsman sorting Reindeer (Rangifer tarandus) in enclosure, Lapland, Sweden, November 2009

David Woodfall / Building a sea wall to combat climate change and protect fishing village from floods, Sundarbans, Bangladesh, October 2008

Sue Daly / Eye of Toby / Pufferfish (Canthigaster sp) Lembeh Straits, Sulawesi, Indonesia

Sue Daly / Close up of eye of Welander's flathead (Rogadius / Sorsogona welanderi) Lembeh Straits, Sulawesi, Indonesia

Sue Daly / Eye of Bristley pufferfish / Toby fish (Arothon hispidus) Lembeh Straits, Sulawesi, Indonesia

Sue Daly / Eye of Panther flounder fish (Bothus pantherinus) Lembeh Straits, Sulawesi, Indonesia

Sue Daly / Close up of eye of Buffalo sculpin (Enophrys bison) Pacific coast, Canada, August

Sue Daly / Black-eye goby (Rhinogobiops nicholsii) Pacific coast, Canada, August

Sue Daly / Eye of Tassled scorpionfish (Scorpaenopsis oxycephala) Lembeh Straits, Sulawesi, Indonesia

Juergen Freund / Split level of coral reef and Sandy Beach Resort, Ha'apai Islands, Tonga, Melanesia, Pacific

Juergen Freund / Split level of research / diving boat 'Undersea Explorer' with free diver exploring the coral reef, Pixie Pinnacle, Great Barrier Reef, Queensland, Australia, 2007

Juergen Freund / Acropora coral field with different species in foreground, Great Barrier Reef, Australia

GEORGETTE DOUWMA / Bigeye or Goggle-eye (Priacanthus hamrur) large school over reef. Egypt, Red Sea.

GEORGETTE DOUWMA / Shoal of Big-eye or Goggle-eye (Priacanthus hamrur) on wreck. Egypt, Red Sea.

Onne van der Wal / Plaza Sotomayor, Valparaiso, Chile 2008.

GEORGETTE DOUWMA / Big eye / Goggle eye fish (Priacanthus hamrur) large shoal over reef, Egypt, Red Sea

GEORGETTE DOUWMA / Big-eye / Goggle-eye fish (Priacanthus hamrur) shoal on wreck, Egypt, Red Sea

Konrad Wothe / Rocks in Libyan Desert, Libya

Wild Wonders of Europe / Lundgren / Underwater landscape showing the tectonic boundary between the Eurasian and the North American plates, Silfra, Thingvellir lake, Thingvellir National Park, Iceland, May 2009

Wild Wonders of Europe / Lundgren / Atlantic spotted dolphins (Stenella frontalis) Pico, Azores, Portugal, June 2009

Peter Cairns / naturepl.com / Photographer working on image of Brown bear (Ursus arctos) on laptop, Finland, June 2008

Peter Cairns / naturepl.com / Photographer taking breakfast at bear ecotourism lodge, Finland, Model released, June 2008

David Woodfall / Sand blowing on beach at low tide, Northumberland, UK, June 2009, June 2009

David Woodfall / Long Nanny nesting colony area of Little terns (Sterna albifrons) and Arctic terns (Sterna paradisaea) Northumberland, UK, June 2009

Wild Wonders of Europe / Cairns / Pack ice on sea in fog, Svalbard, Norway, August 2009

Laurie Campbell / White Water Lily (Nymphaea alba) flower and leaves, Inverness-shire, Scotland, UK, July

Nick Garbutt / Lifting tourist Zodiac inflatable boat onto mother ship, Akademik Ioffe, Spitsbergen, Svalbard, Arctic Norway, June 2009

Wild Wonders of Europe / Roggo / Tench (Tinca tinca) in peat pond, Fribourg, Switzerland, May 2009

Wild Wonders of Europe / Roggo / Red-eye / Common rudd (Scardinius erythrophthalmus) in peat pond, Fribourg, Switzerland, May 2009

Claudio Contreras / Shoal of Horse-eye jack / trevally (Caranx latus) with Great barracuda (Sphyraena barracuda) in the background, Cancun National Park, Caribbean Sea, Mexico, July

Albert Lleal / Ringneck Blenny (Parablennius pilicornis) male with characteristic protrusions branched over each eye, Barcelona, Spain

Wild Wonders of Europe / Carwardine / Aerial view of volcanic landscape south east of Lake Myvatn, Northern Iceland, July 2009

Wild Wonders of Europe / Carwardine / Aerial view of mountainous terrain between Akureryi and Husavik, Northern Iceland, July 2009

David Tipling / King penguin (Aptenodytes patagonicus) colony, St Andrews Bay, South Georgia, November

David Tipling / Black browed albatross (Thalassarche / Diomedea melanophrys) colony incubating eggs with a tourist in foreground photographing, Steeple Jason Island, Falklands, November 2006

Wild Wonders of Europe / Radisics / Marigolds (Caltha palustris) in flower, Durmitor NP, Montenegro, May 2008

Wild Wonders of Europe / Radisics / Grape hyacinth, (Muscari racemosum) in flower, Durmitor NP, Montenegro, May 2008

Mark Bowler / Aguaje / Buriti palm fruits, Belen Market, Iquitos, Peru, May 2006

Mark Bowler / Varzea flooded forest, Amazon Rainforest, Yavari River, Peru, april 2006

Mark Bowler / Aguaje palm / Buriti palm fruits Belen Market, Iquitos, Peru, May 2006

Mark Bowler / Preserved Snake heads in Belen Market, Belem, Loreto, Iquitos, Peru, May 2006

Mark Bowler / Paiche / Pirarucu (Arapaima gigas) salted fish, Belen Market, Iquitos, Peru, May 2006

Mark Bowler / Yellow foot tortoise meat (Geochelone denticulata) for sale as bushmeat, Belen Market, Loreto, Iquitos, Peru, May 2006

Mark Bowler / Woman selling medicinal plants in Belen Market, Belen / Little Venice, Loreto, Iquitos, Peru, May 2006

Tony Phelps / Hedgehog lilies (Massonia depressa) flowering, Dehoop Nature reserve, Western Cape, South Africa