Ingo Arndt / Snow covered Cerro Paine Grande in the Cordillera Paine massif. At sunrise, Torres del Paine National Park, Patagonia, Chile. April 2017.

Andy Rouse / Bengal Tiger (Panthera tigris) family drinking from pool, Ranthambhore, India

Jami Tarris / African Elephant (Loxodonta africana) herd on savanna, Mount Kilimanjaro, Amboseli National Park, Kenya

Sven Zacek / Brown bear (Ursus arctos) in coniferous forest. Ida-Virumaa, Eastern Estonia. September.

Jack Dykinga / Aurora Borealis display above conifers and Polar Lake. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Sandesh Kadur / Blue wildebeest (Connochaetes taurinus) crossing a river, Serengeti National Park, Tanzania.

Guy Edwardes / Landscape of Alpe di Siusi, Dolomites, Italy, March 2016.

Stephane Granzotto / Alpine ibex (Capra ibex) feeding in deep snow, digging to reach food, Rhone-Alpes, France, December.

Ashley Cooper / Sunflower next to the PS20 solar thermal tower, the only such working solar tower currently in the world. Sanlucar La Mayor, Andalucia, Spain. May 2011

Ashley Cooper / Heliostats, large reflective mirrors directing sunlight to the PS20 solar thermal tower, the only such working solar tower currently in the world. Sanlucar La Mayor, Andalucia, Spain. June 2011

Andrew Peacock / Minden / Taiga and snow-covered mountains in autumn, Glacier Bay National Park, Alaska

Guy Edwardes / Fairy Pools with Cuillin range in background, Glen Brittle, Isle of Skye, Inner Hebrides, Scotland, UK. January 2015.

David Fleetham / Florida manatee (Trichechus manatus latirostris) at Three Sisters Spring in Crystal River, Florida, USA.

David Fleetham / Florida Manatee (Trichechus manatus latirostris), Three Sisters Spring, Crystal River, Florida, USA. National Wildlife Federation Photo Contest Grand Prize WINNER 2010.

Andrew Peacock / Taiga and coastal snow-covered mountains in autumn, Glacier Bay National Park, Alaska

Kirkendall-Spring Photographers / Vicky Spring next to a small tarn, Lyman Lakes Basin, Glacier Peak Wilderness, Wenatchee National Forest, Washington, USA, September 2014. Model released.

John Waters / Wide-angle shot of wetland landscape at sunset, with Lapwings (Vanellus vanellus) flying to roost, Ham Wall RSPB Reserve, Somerset Levels, England, UK, February.

Five Films / Timelapse of a lightning storm at night, Murchison Falls National Park, Uganda, April 2014.

Five Films / Timelapse of a lightning storm at night, Murchison Falls National Park, Uganda, April 2014.

Pal Hermansen / Aerial shot of mist over a mountain lake, Golsfjellet, Buskerund, Norway, October 2017.

Pal Hermansen / Aerial shot of patterns in a frozen lake, Lake Langen, Akershus, Norway, December 2017.

Pal Hermansen / Aerial shot of field with tractor tracks, Ski, Akershus, Norway, November 2017.

Pal Hermansen / Aerial shot of an ice skating arena, Lake Langen, Akershus, Norway, December 2017.

Pal Hermansen / Aerial shot of lake covered by the first snow, Bindingsvann, Akershus, November Norway, November 2017.

Dave Bevan / Juvenile male Wild boar (Sus scrofa) fighting to establish seniority, Gloucestershire, England, UK, December.

Michael Hutchinson / Tracking shot of Wood anemones (Anemone nemorosa) flowering in woodland, Bristol, England, UK, April.

Mick Jenner / Water vole (Arvicola amphibius) feeding on plastic, West Sussex, England, UK.

Dave Bevan / Bittern (Botaurus stellaris) hunting and catching a fish, Suffolk, England, UK, October.

Luke Massey / Wild boar (Sus scrofa) piglets suckling from mother, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Wild boar (Sus scrofa) piglets resting, with mother nearby, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Low angle shot of Wild boar (Sus scrofa) piglets running towards parent, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Two Wild boar (Sus scrofa) feeding in woodland with piglets, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Close-up of a Wild boar (Sus scrofa) piglet feeding, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Close-up of a Wild boar (Sus scrofa) approaching a remote camera and knocking it over, Forest of Dean, Gloucestershire, England, UK, May.

Tim Fitzharris / Taiga and peaks, Sundance Range, Vermilion Lakes, Banff National Park, Alberta, Canada

Terry Whittaker / Pod of Killer whales (Orcinus orca) at surface, Grundarfjordur, Iceland, March.

John Waters / Mixed flock of Wigeon (Anas penelope) and Northern lapwings (Vanellus vanellus) disturbed by hunting Marsh Harrier (Circus aeruginosus), Greylake RSPB Reserve, Somerset Levels, England, UK, December.

John Waters / Slow motion clip of a flock of Northern lapwings (Vanellus vanellus) flying over a flooded marsh, Catcott Lows Nature Reserve, Somerset Levels, England, UK, December.

Edwin Giesbers / Close-up of a litter of Wild boar (Sus scrofa) piglets sleeping on top of their mother, with another piglet joining, Germany, January. Captive.

Edwin Giesbers / Close-up of a litter of Wild boar (Sus scrofa) piglets sleeping on top of their mother, with another piglet joining, Germany, January. Captive.

Edwin Giesbers / Close-up of a litter of Wild boar (Sus scrofa) piglets sleeping on top of their mother, Germany, January. Captive.

Ingo Arndt / Long eared owl in tree {Asio otus} Hessen Germany

Philippe Clement / Panning shot of silhouetted pine trees and early morning mist rising from a lake, Loch Garten, Strathspey, Scotland, UK, September.

John Waters / Timelapse of flies and a slug on a Common stinkhorn fungus (Phallus impudicus), Mendips, Somerset, UK, July.

John Waters / Timelapse of flies feeding on the tip of a Common stinkhorn fungus (Phallus impudicus), Mendips, Somerset, UK, July.

Terry Whittaker / Red squirrel (Sciurus vulgaris) leaping between Scots pine tree (Pinus sylvestris)s, lands on camera, Black Isle, Ross and Cromarty, Scotland, February.

Christophe Courteau / Steam emerging from a fault on the summit of Nyiragongo Volcano, Democratic Republic of Congo. 2015.

Christophe Courteau / Plains zebra (Equus burchelli) drinking in a dust storm, Boteti River, Kalahari Desert, Botswana.

Nick Upton / Eurasian beaver (Castor fiber) adding a branch to its dam, Tayside, Scotland, UK, May. Filmed at night using a remote camera and infra red light.

Philippe Clement / Three male Alpine ibex (Capra ibex) climbing up a steep mountain rock face, one pushes another one away, Gran Paradiso National Park, Graian Alps, Italy, June.

Philippe Clement / Two male Alpine ibex (Capra ibex) fighting on a steep mountain rock face, Gran Paradiso National Park, Graian Alps, Italy, June.

Andy Rouse / Mute swan (Cygnus olor) feeding at dawn, Cardiff, Wales, UK, March.

Andy Rouse / Slow motion clip of a Common kingfisher (Alcedo atthis) catching a fish, Scotland, UK, January.

Andy Rouse / Pair of Great crested grebes (Podiceps cristatus) courting, Cardiff, Wales, UK, March.

Andy Rouse / Pair of Great crested grebes (Podiceps cristatus) courting, Cardiff, Wales, UK, March.

John Waters / Pair of Sea lampreys (Petromyzon marinus) spawning, one attempting to move a rock, River Wye, UK, June.

Dave Bevan / Female Blackbird (Turdus merula) feeding chicks at nest, removing faecal sacs, Carmarthenshire, Wales, UK, June.

Nick Upton / Female Eurasian beaver (Castor fiber) and five kits feeding on a Willow (Salix) sapling, River Otter, Devon, England, UK, July. Part of Devon Wildlife Trust's Devon Beaver Trial.

Terry Whittaker / Water vole (Arvicola amphibius) swimming underwater, dragging nesting material back to its burrow, Kent, England, UK. October.

Terry Whittaker / Water vole (Arvicola amphibius) feeding on Yellow flag iris (Iris pseudacorus) seed pods, Kent, England, UK. October.

John Waters / Timelapse Frogs (Rana temporaria) spawning in garden pond, Somerset, England, UK. March.

John Waters / Timelapse of temperature inversion clouds at sunset, Swiss Alps, Switzerland. October 2013.

John Waters / Small group of Rainbow trout (Oncorhynchus mykiss) swimming in the River Kennet, Berkshire, England, UK, March.

John Waters / Small shoal of Brown trout (Salmo trutta) swimming and feeding in the River Kennet, Berkshire, England, UK, March.

John Waters / Shoal of Minnows (Phoxinus phoxinus) swimming and feeding in the River Wye, Wales, UK, July.

Peter Bassett / King penguins (Aptenodytes patagonicus) preening in breeding colony, with mountains in the background, Salisbury Plain, South Georgia.

Peter Bassett / King penguins (Aptenodytes patagonicus) walking towards and entering the sea near their breeding colony, Salisbury Plain, South Georgia.

Steve Downer / Close up of Mute swan cygnets (Cygnus olor) riding on their mother's back, Birmingham, England, UK, May.

Nick Upton / Two Eurasian beaver kits (Castor fiber) feeding at night, born in the wild on the River Otter as part of the River Otter Beaver Trial, Devon, England, UK, August 2015.

SCOTLAND: The Big Picture / Mountain hare (Lepus timidus) resting in a snowhole, with windblown snow, Cairngorms National Park, Scotland, UK, January.

SCOTLAND: The Big Picture / Mountain hare leveret (Lepus timidus) grooming amongst flowering heather, Cairngorms National Park, Scotland, UK, August.

SCOTLAND: The Big Picture / Close up of a Red deer (Cervus elaphus) stag feeding in snow, Cairngorms National Park, Scotland, UK, February.

SCOTLAND: The Big Picture / Scots pine trees (Pinus sylvestris) in heavy snowfall, Cairngorms National Park, Scotland, UK, January.

SCOTLAND: The Big Picture / Timelapse of Old Man of Storr in winter, Trotternish Ridge, Isle of Skye, Inner Hebrides, Scotland, UK, March 2014.

SCOTLAND: The Big Picture / Timelapse of clouds moving over mountains and loch, Assynt, November 2013

SCOTLAND: The Big Picture / Atlantic salmon (Salmo salar) leaping up a small waterfall in order to reach breeding grounds further upstream, Cairngorms National Park, Scotland, UK, October.

SCOTLAND: The Big Picture / Two male Black grouse (Tetrao tetrix) displaying at a lek, Cairngorms National Park, Scotland, UK, April.

Silke Arndt / Western rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA, September.

Frederique Olivier / Young Burchell's zebra (Equus burchellii) playing, biting and kicking its mother, Serengeti NP, Tanzania.

Konrad Wothe / Giant snail (Megalobulimus) in a lowland rainforest, Panguana Reserve, Huanuco Region, Peru.

James Dunbar / Male Orb-weaving spider (Araneus) courting a female near a dead fly, Bristol, England, UK, September.

Nick Upton / Eurasian beaver (Castor fiber) at night, swimming, Devon Wildlife TrustÕs Devon Beaver Project enclosure, Devon, England, UK, March.

Nick Upton / Eurasian beaver (Castor fiber) at night, chewing bark and climbing along a felled tree, Devon Wildlife TrustÕs Devon Beaver Project enclosure, Devon, England, UK, March.

Nick Upton / Slow motion clip of a Meadow brown butterfly (Maniola jurtina) and a Gatekeeper butterfly (Pyronia tithonus) nectaring on Saw-wort flowers (Serratula tinctoria), with a Silver-washed fritillary (Argyn...

Nick Upton / Little egret (Egretta garzetta) struggling to swallow a large Pike (Esox lucius) it has just caught, Rutland Water, Rutland, England, UK, November.

Nick Upton / Eurasian beaver (Castor fiber) feeding on grass amongst Meadow buttercups (Ranunculus acris) near a pond in a large enclosure, Devon, England, UK, June. Captive.

Denis-Huot / Masai giraffe (Giraffa camelopardalis tippelskirchi) in distance silhouetted at sunrise with clouds, Masai-Mara Game Reserve, Kenya. September.

Denis-Huot / Masai giraffes (Giraffa camelopardalis tippelskirchi) in dry season, Masai-Mara Game Reserve, Kenya. March.

Denis-Huot / Masai giraffe (Giraffa camelopardalis tippelskirchi) herd at sunrise, Masai-Mara Game Reserve, Kenya. November.

Denis-Huot / Cheetah (Acinonyx jubatus) female with cubs sitting in long grass during the dry season, Masai-Mara Game Reserve, Kenya. March.

Denis-Huot / Crowned crane (Balearica regulorum gibbericeps) pair at sunrise, Masai-Mara Game Reserve, Kenya. June.

Denis-Huot / Masai giraffes (Giraffa camelopardalis tippelskirchi), at sunrise, Masai-Mara Game Reserve, Kenya. March.

Denis-Huot / Cheetah (Acinonyx jubatus) resting with rainbow behind it, Masai-Mara Game Reserve, Kenya. September.

Denis-Huot / Two cheetahs (Acinonyx jubatus) in dry season, Masai-Mara Game Reserve, Kenya. February.

Eric Dragesco / Wild Snow leopard (Uncia uncia) feeding on a kill hidden behind a rock, with a Eurasian magpie (Pica pica) in the foreground, Altai Mountains, Mongolia, February.

Eric Dragesco / Wild Snow leopard (Uncia uncia) climbing among rocks on a mountainside, Altai Mountains, Mongolia, August.