Sven Zacek / Aerial view of a small forest lake in Karula National Park, Valgamaa county, Southern Estonia. Highly commended in the Wildlife Photographer of the Year Awards 2019.

Martin Willis / Splendid Fairywren (Malurus splendens) female and male, Queensland, Australia

Martin Willis / Spinifex Grass (Spinifex sp) in desert, Kata Tjuta, Australia

Martin Willis / Mangroves along coast and boat, Deluge Inlet, Hinchinbrook Island National Park, Queensland, Australia

Sergio Hanquet / Green sea turtle (Chelonia mydas), two viewed from above. Tenerife, Canary Islands.

Danny Green / Arctic fox (Vulpes lagopus), two in snow covered landscape. Svalbard, Norway, April 2019.

Danny Green / Arctic fox (Alopex lagopus) camouflaged in winter pelage. Svalbard, Norway, April.

Phil Savoie / Blue tit (Cyanistes caeruleus) bringing Crab spider (Misumena vatia) prey to nest, Monmouthshire Wales, UK, May.

Shane Gross / Flying fish (Exocoetidae) in Sargasso Sea, Atlantic Ocean.

Clay Bolt / Blue-banded bee (Amegilla sp) males sleeping on stem. Halmahera, North Maluku, Indonesia.

Claudio Contreras / California condor (Gymnogyps californianus), two perched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Ingo Arndt / Sun rising over ice formations on Lake Baikal. Siberia, Russia. February 2019.

Gary Bell/ Oceanwide / Grey Nurse Shark (Carcharias taurus), Solitary Islands Marine Park, New South Wales, Australia

Gary Bell/ Oceanwide / Tropical island, Keeling Islands, Australia

Gary Bell/ Oceanwide / Tropical island, Keeling Islands, Australia

Gary Bell/ Oceanwide / Tropical island, Keeling Islands, Australia

Gary Bell/ Oceanwide / Tropical island, Keeling Islands, Australia

Gary Bell/ Oceanwide / Lichen (Caloplaca sp) covered coastal rock, Flinders Island, Tasmania, Australia

Gary Bell/ Oceanwide / Coast, Red Rock Beach, Phillip Island, Victoria, Australia

Gary Bell/ Oceanwide / Tropical beach, Keeling Islands, Australia

Gary Bell/ Oceanwide / Tropical island, Keeling Islands, Australia

Gary Bell/ Oceanwide / Tropical island, Keeling Islands, Australia

Gary Bell/ Oceanwide / Coconut Palm (Cocos nucifera) fruit germinating on tropical beach, Keeling Islands, Australia

Gary Bell/ Oceanwide / Coconut Palm (Cocos nucifera) fruit germinating on tropical beach, Keeling Islands, Australia

Gary Bell/ Oceanwide / Tropical reef, Great Barrier Reef, Queensland, Australia

Gary Bell/ Oceanwide / Red tide, Heron Island, Great Barrier Reef, Queensland, Australia

Gary Bell/ Oceanwide / Whitemouth Moray (Gymnothorax meleagris) being cleaned by Cleaner Wrasse (Labroides sp) juvenile, Christmas Island, Australia

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

Tony Heald / Glaucous Gull (Larus hyperboreus) taking off from ice, Svalbard Norway, July.

Doug Gimesy / Little penguin (Eudyptula minor) on rocks of St Kilda breakwater, Melbourne city lights in background. Victoria, Australia. January 2017.

Theo Bosboom / Blue hour before sunrise over the dunes of Seilebost beach, Isle of Harris, Hebrides, Scotland. February 2018.

Jordi Chias / Leopard seal (Hydrurga leptonyx) resting over an iceberg, Antarctic Peninsula, Antarctica.

Jordi Chias / Iceberg, Antarctic Peninsula, Antarctica.

Staffan Widstrand / Indian peafowl or blue peafowl (Pavo cristatus) Keoladeo Ghana National Park, Bharatpur, Rajasthan, India

Loic Poidevin / Eurasian blue tit (Cyanistes caeruleus) on a branch, Vendee, France, January.

Alex Mustard / RF - Blue whale (Balaenoptera musculus) diving vertically down into the ocean to feed. Indian Ocean, off Sri Lanka. (This image may be licensed either as rights managed or royalty free.)

Alex Mustard / RF - Denise's pygmy seahorse (Hippocampus denise) looks out from its home in a sea fan (Annella sp.). Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea. Tropical West Pacific Ocean. (This image...

Alex Mustard / Blue whale (Balaenoptera musculus) swimming beneath the surface of the ocean. Indian Ocean, off Sri Lanka.

Alex Mustard / Blue whale (Balaenoptera musculus) swims beneath the surface of the ocean. Indian Ocean, off Sri Lanka.

Eladio Fernandez / Blue-headed quail-dove (Starnoenas cyanocephala) profile, Cuba. Endangered species. Endemic.

Jeff Foott / California Poppy (Eschscholzia californica) and Goldfield (Lasthenia californica) flowers,superbloom, Antelope Valley, California

Jeff Foott / Purple Owl's Clover (Castilleja exserta) and Goldfield (Lasthenia californica) flowers, super bloom, Carrizo Plain National Monument, California

Jeff Foott / California Poppy (Eschscholzia californica) and Goldfield (Lasthenia californica) flowers,super bloom, Antelope Valley, California

Jeff Foott / California Poppy (Eschscholzia californica) and Goldfield (Lasthenia californica) flowers, super bloom, Antelope Valley, California

Jeff Foott / Park Avenue view, Arches National Park, Utah

Jeff Foott / Tower Arch, Arches National Park, Utah

Jeff Foott / Marching Men formation, Arches National Park, Utah

Jeff Foott / Marching Men formation, Arches National Park, Utah

Jeff Foott / Full moon over Balanced Rock formation, Arches National Park, Utah

Jeff Foott / Turret Arch in winter, La Sal Mountains, Arches National Park, Utah

Jeff Foott / Double O Arch, Arches National Park, Utah

Jeff Foott / Mule-ears (Wyethia amplexicaulis) flowers at the The Organ, Arches National Park, Utah

Jeff Foott / Marching Men sandstone formation, Arches National Park, Utah

Jeff Foott / Skyline Arch, Arches National Park, Utah

Jeff Foott / Delicate Arch and the La Sal Mountains, Arches National Park, Utah

Jeff Foott / Paintbrush (Castilleja sp) flowers, Arches National Park, Utah

Jeff Foott / Sandstone rock formations, La Sal Mountains, Arches National Park, Utah

Nigel Cattlin / Blue colour variation of Green paddy leafhopper, (Nephottetix virescens) a biotype of this pest species

Derek Galon / Drone shot revealing Victoria Falls, water is milky blue as it contains sulphur from Boiling Lake, Dominica, 2019

Derek Galon / Drone shot approaching Victoria Falls after heavy rains, normally water is milky blue as it contains sulphur from Boiling Lake, after rain it is muddy, Dominica, 2019.

John Shaw / Common eider duck (Somateria mollissima) female defending her nest from arctic fox (Vulpes lagopus). Longyearbyen, Spitsbergen. June.

John Shaw / Cheetah (Acinonyx jubatus) stretches on a downed tree. Zimbabwe. September.

John Shaw / Osprey (Pandion haliaetus) with Atlantic needlefish (Strongylura marina) it has caught. Blue Cypress Lake, Florida, USA, April.

John Shaw / Late afternoon light warms the colors in the Yellow Mounds area, Badlands National Park, South Dakota, USA, September.

Shane Gross / Pelagic thresher shark (Alopias pelagicus) cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) at Monad Shoal off Malapascua Island, Philippines.

Shane Gross / Pelagic thresher shark (Alopias pelagicus) being cleaned by a bluestreak cleaner wrasse (Labroides dimidiatus) at Monad Shoal off Malapascua Island, Philippines.

Nick Upton / Captive reared juvenile White stork (Ciconia ciconia) in flight over the Knepp Estate soon after release, Sussex, UK, August 2019.

Nick Upton / Captive reared juvenile White stork (Ciconia ciconia) with a GPS tracker on its back in flight over the Knepp Estate soon after release, Sussex, UK, August 2019.

Andy Rouse / Kingfisher, (Alcedo atthis), diving for fish from branch, UK, Medium repro only

Andy Rouse / Kingfisher, (Alcedo atthis), diving for fish, UK

Andy Rouse / Kingfisher, (Alcedo atthis), diving for fish, UK, Medium repro only, Motion blur

Andy Rouse / Kingfisher, (Alcedo atthis), diving for fish, UK

Colin Monteath/ Hedgehog House / Icebergs in winter in lake, Hooker Glacier, Mount Cook, Mount Cook National Park, New Zealand

Edwin Giesbers / Crown daisy (Glebionis coronarium) flowers against sky, low angle view. Cyprus. April.

Edwin Giesbers / Tassel hyacinth (Muscari comosum) flower. Cyprus. April.

Jack Dykinga / Sandhill crane (Antigone canadensis) in flight against blue sky, Bosque Del Apache, New Mexico, USA. December.

Nick Hawkins / Ocean sunfish (Mola mola) off Halifax, Nova Scotia, Canada. July.

Nick Hawkins / Blue shark (Prionace glauca) with a pair of pilot fish (Naucrates ductor) off Halifax, Nova Scotia, Canada. July.

Nick Hawkins / Blue shark (Prionace glauca) off Halifax, Nova Scotia, Canada. July.

Nick Hawkins / Overhead view of a blue shark (Prionace glauca) off Halifax, Nova Scotia, Canada. July.

Nick Hawkins / Atlantic bluefin tuna (Thunnus thynnus) off Antigonish, Nova Scotia, Canada. October .

Robert Valentic / Lowland blotched blue-tongue (Tiliqua nigrolutea) on a coastal bluff in the Bay of Fires region of north-eastern Tasmania, Australia, spring.

SCOTLAND: The Big Picture / Blue mussels (Mytilus edulis) with encrusting marine life, Sula Sgeir, Scotland. UK, July

SCOTLAND: The Big Picture / Aerial view of nesting Gannets (Morus bassanus) and swirling seas, Hermaness, Shetland, Scotland, UK, October.

Shane P. White / Winnifred Beach, Jamaica

Milan Radisics / Aerial shot of an artificial lake polluted by extractive pyrite mining, the orange color comes from sulfite and the blue is a reflection of the sky, Minas de Riotinto, Andalusia, Spain, January 2019.

Milan Radisics / Aerial shot of the shore of an artificial lake polluted by extractive pyrite mining, the orange color comes from sulfite and the blue is a reflection of the sky, Minas de Riotinto, Andalusia, Spain, J...

Terry Whittaker / Arctic fox (Vulpes lagopus). Blue colour morph. Hornstrandir Nature Reserve, Iceland. March

Terry Whittaker / RF - Arctic foxes (Vulpes lagopus) interacting Blue colour morph. Hornstrandir Nature Reserve, Iceland. March. (This image may be licensed either as rights managed or royalty free.)

Ross Hoddinott / Common blue damselfly (Enallagma cyathigerum), close up portrait, Broxwater, Cornwall, UK. July.

Ross Hoddinott / Common blue butterflies (Polyommatus icarus) basking in the morning light, Vealand Farm, Devon, UK. July

Ross Hoddinott / Chalkhill blue butterfly (Polyommatus coridon) Hatch Hill, Somerset, UK. August.

Ross Hoddinott / Southern hawker (Aeshna cyanea) dragonfly in flight, Broxwater, Cornwall, UK. August.

Ross Hoddinott / Southern hawker (Aeshna cyanea) dragonfly in flight, Broxwater, Cornwall, UK. July.

Ross Hoddinott / Southern hawker (Aeshna cyanea) dragonfly in flight, Broxwater, Cornwall, UK. July.

Ross Hoddinott / RF - Southern hawker (Aeshna cyanea) dragonfly in flight, Broxwater, Cornwall, UK. August.