Sergey Gorshkov / Northern goshawk (Accipiter gentilis) flying with squirrel prey, Finland . March

Sergey Gorshkov / Northern goshawks (Accipiter gentilis) fighting over squirrel carcass, Finland, March.

Sergey Gorshkov / Black Grouse (Tetrao tetrix) males fighting at lek in the snow, Tver, Russia. April

Sergey Gorshkov / Leopard (Panthera pardus) walking beside waterhole, reflected in the water at dusk. Londolozi Private Game Reserve, Sabi Sands Game Reserve, South Africa.

Sergey Gorshkov / Moonrise at twilight, Putoransky State Nature Reserve, Putorana Plateau, Siberia, Russia

Sergey Gorshkov / Sunset over Putoransky State Nature Reserve, Putorana Plateau, Siberia, Russia, October.

Sergey Gorshkov / Lionesses (Panthera leo) trying to bring down African buffalo (Syncerus caffer) Londolozi Private Game Reserve, Sabi Sands Game Reserve, South Africa. Sequence 1 of 5

Sergey Gorshkov / Lionesses (Panthera leo) trying to bring down African buffalo (Syncerus caffer) Londolozi Private Game Reserve, Sabi Sands Game Reserve, South Africa. Sequence 2 of 5

Sergey Gorshkov / Lionesses (Panthera leo) trying to bring down African buffalo (Syncerus caffer) Londolozi Private Game Reserve, Sabi Sands Game Reserve, South Africa. Sequence 3 of 5

Sergey Gorshkov / Lioness (Panthera leo) trying to bring down African buffalo (Syncerus caffer) Londolozi Private Game Reserve, Sabi Sands Game Reserve, South Africa. Sequence 4 of 5

Sergey Gorshkov / Lionesses (Panthera leo) trying to bring down African buffalo (Syncerus caffer) Londolozi Private Game Reserve, Sabi Sand Game Reserve, South Africa. Sequence 5 of 5

Sergey Gorshkov / Leopard (Panthera pardus) female fighting off male after he tries to mate with her. Londolozi Private Game Reserve, Sabi Sand Game Reserve, South Africa.

Sergey Gorshkov / Arctic fox (Alopex lagopus) juveniles play fighting, Wrangel Island, Far East Russia, August.

Sergey Gorshkov / Gemsbok (Oryx gazella) in sand dunes, Namibia. Finalist in the Mammals Category of the Wildlife Photographer of the Year Awards (WPOY) Competition 2015.

Sergey Gorshkov / Plume of volcanic ash lit by a basaltic lava flow from the Tolbachik volcano complex, Kamchatka, Far East Russia, eruption lasted from December 22nd 2012 through to January 2nd 2013

Sergey Gorshkov / Plume of volcanic ash lit by a basaltic lava flow from the Tolbachik volcano complex, Kamchatka, Far East Russia, eruption lasted from December 22nd 2012 through to January 2nd 2013

Sergey Gorshkov / Polar bear (Ursus maritimus) vocalising, Wrangel Island, Far Eastern Russia, September.

Sergey Gorshkov / Polar bear (Ursus maritimus) walking along beach, Wrangel Island, Far Eastern Russia, September.

Sergey Gorshkov / Polar bears (Ursus maritimus) juveniles playing in waves, Wrangel Island, Far Eastern Russia. September 2010.

Sergey Gorshkov / Arctic foxes (Vulpes lagopus) playing, silhouetted at sunset, Wrangel Island, Far Eastern Russia. August 2010.

Sergey Gorshkov / Musk ox (Ovibos moschatus) two covered in snow, Wrangel Island, Far Eastern Russia, September.

Sergey Gorshkov / Musk ox (Ovibos moschatus) covered in snow, Wrangel Island, Far Eastern Russia, September.

Sergey Gorshkov / Musk ox (Ovibos moschatus) two in habitat, Wrangel Island, Far Eastern Russia, October.

Sergey Gorshkov / Arctic fox (Vulpes lagopus) in winter fur, licking nose, Wrangel Island, Far Eastern Russia, October.

Sergey Gorshkov / Musk ox (Ovibos moschatus) herd, Wrangel Island, Far Eastern Russia, March.

Sergey Gorshkov / Musk ox (Ovibos moschatus) portrait, Wrangel Island, Far Eastern Russia, March.

Sergey Gorshkov / Polar bear (Ursus maritimus) mother with three very young cubs, Wrangel Island, Far Eastern Russia, March.

Sergey Gorshkov / Arctic fox (Vulpes lagopus) with Snow goose egg in mouth, mid moult from winter to summer fur, Wrangel Island, Far Eastern Russia.

Sergey Gorshkov / Arctic fox (Vulpes lagopus) with Snow goose egg in mouth, mid moult from winter to summer fur, Wrangel Island, Far Eastern Russia, June.

Sergey Gorshkov / Arctic fox (Vulpes lagopus) with Snow goose egg in mouth, mid moult from winter to summer fur, Wrangel Island, Far Eastern Russia, June.

Sergey Gorshkov / Snow geese (Chen caerulescens caerulescens) taking off, Wrangel Island, Far Eastern Russia, June.

Sergey Gorshkov / Snow goose (Chen caerulescens caerulescens) brooding chicks, with rusty orange face from iron rich soil in which it forages. Wrangel Island, Far Eastern Russia, June.

Sergey Gorshkov / Walrus (Odobenus rosmarus) on coast of Wrangel Island, Far Eastern Russia, September.

Sergey Gorshkov / Tolbachik Volcano erupting with lava flowing down the mountain side. Kamchatka, Russia. November 29th 2013. Winner of the Wildscapes category, Wildlife Photographer of the Year Awards (WPOY competitio...

Sergey Gorshkov / Plume of volcanic ash lit by a basaltic lava flow from the Tolbachik volcano complex, Kamchatka, Far East Russia, eruption lasted from December 22nd 2012 through to January 2nd 2013.

Sergey Gorshkov / Basaltic lava flow from the Tolbachik volcano complex, Kamchatka, Far East Russia, eruption lasted from December 22nd 2012 through to January 2nd 2013.

Sergey Gorshkov / Ash and lava erupting from Plosky Tolbachik Volcano, Kamchatka Peninsula, Russia, 15 December 2012

Sergey Gorshkov / Red hot lava flow from Plosky Tolbachik Volcano, Kamchatka Peninsula, Russia, 15 December 2012

Sergey Gorshkov / Lava and ash erupting from Plosky Tolbachik Volcano, Kamchatka Peninsula, Russia, 15 December 2012

Sergey Gorshkov / Ash plume and lava erupting from Plosky Tolbachik Volcano, Kamchatka Peninsula, Russia, 5 December 2012

Sergey Gorshkov / Red hot lava from the Plosky Tolbachik Volcano eruption, Kamchatka Peninsula, Russia, 5 December 2012

Sergey Gorshkov / Ruffs displaying and fighting (Philomachus pugnax) Agapa River, Taimyr Peninsula, Siberia, Russia

Sergey Gorshkov / Ruff displaying (Philomachus pugnax) Agapa River, Taimyr Peninsula, Siberia, Russia

Sergey Gorshkov / Willow grouse / ptarmigan (Lagopus lagopus) pair in flight, Agapa River, Taimyr Peninsula, Siberia, Russia

Sergey Gorshkov / Giraffe (Giraffa camelopardalis) three standing together, silhouetted at dusk, Okavango Delta, Botswana

Sergey Gorshkov / Giraffe (Giraffa camelopardalis) female bending down to calf, Okavango Delta, Botswana

Sergey Gorshkov / Leopard cub portrait (Panthera pardus) Okavango Delta, Botswana

Sergey Gorshkov / African elephant (Loxodonta africana) juvenile flapping ears, Okavango Delta, Botswana