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

Oscar Dewhurst / Red fox (Vulpes vulpes) sitting on a frozen lake at the edge of the reeds. London, UK. December.

Pal Hermansen / Cracked frozen lake following the first snow of winter, aerial view. Akershus, Norway. December 2018.

Ashley Cooper / Needle ice on Holly leaves (Ilex europaeus) in a woodland in Ambleside Cumbria UK. December 2008

Guy Edwardes / Rannoch Moor and The Black Mount in winter, Highlands, Scotland, UK. January 2015.

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

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

Jan Wegener/ BIA / Grey Heron (Ardea cinerea) spreading wings on frozen lake, Berlin, Germany

Ingo Arndt / Close up of frozen lake in winter, Germany

Benjamin Olson / Skim ice in negative thirty degree fahrenheit at sunrise, Lake Superior, Grand Portage National Monument, Minnesota

Benjamin Olson / Cave at night during polar vortex, Lake Superior, Tettegouche State Park, Minnesota, multiple exposures

Wim van den Heever / Whooper swan (Cygnus cygnus) mid flight over the frozen lake, Kussharo, Hokkaido, Japan.

Wim van den Heever / Whooper swan (Cygnus cygnus) portrait, on frozen lake Kussharo, Hokkaido Japan, February.

Wim van den Heever / Whooper swans (Cygnus cygnus) juvenile with adults behind, on frozen Lake Kussharo, Hokkaido, Japan. February.

Kevin Schafer / Frozen gas bubbles beneath surface of frozen lake, Abraham Lake, Canadian Rockies, Alberta, Canada

Orsolya Haarberg / High angle view of person walking on frozen lake of cracked ice. Lofoten Isands, Norway. January. Highly commended in the Landscape Category of the Oasis Photography Competition 2017. Highly commended...

Erlend Haarberg / Ice patterns on lake, Sorvagen, Moskenes, Lofoten, Nordland, Norway, January.

Floris van Breugel / Cuernos del Paine reflected in icy lake at dawn, Torres del Paine National Park, Chile, June 2014.

Floris van Breugel / Mount Fitz Roy at dawn on a snowy winter morning, Patagonia region of Argentina near El Chalten, June 2014.

Floris van Breugel / Flawless crystalline ice, produced through millennia of glacial pressure, floating on Lago Grey, Torres del Paine National Park, Chile, June 2014.

Olga Kamenskaya / Ice formations in snow on Lake Baikal, Siberia, Russia, March 2007.

Olga Kamenskaya / Wide angle view of vehicle parked on ice on lake surface. Lake Baikal, Siberia, Russia, March 2007.

Olga Kamenskaya / Clear pane of ice on Lake Baikal, Siberia, Russia, March 2007.

Olga Kamenskaya / Ice formations on Lake Baikal, Siberia, Russia, March 2007.

Olga Kamenskaya / Vehicles parked on ice on the surface of Lake Baikal, Siberia, Russia, March 2008.

Olga Kamenskaya / Ice formations on Lake Baikal, Siberia, Russia, March 2007.

Olga Kamenskaya / Transparent ice formation on Lake Baikal, Siberia, Russia, March 2012.

Olga Kamenskaya / Ice formations on Lake Baikal, Siberia, Russia, March 2012.

Olga Kamenskaya / Man looking through transparent ice (1m thick) on lake surface to see diver below. Lake Baikal, Russia, March 2008. Model released.

Olga Kamenskaya / Ice stalagmites / ice spikes formation, Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Ice splash out formation with icicles, Lake Baikal, Siberia, Russia, March

Olga Kamenskaya / View of people standing on ice from underneath car, on the ice of Lake Baikal, Siberia, Russia, March. Property released and Model released.

Olga Kamenskaya / Mini van crossing over pile of ice on Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Mini van crossing Lake Baikal ice, Siberia, Russia, March.

Olga Kamenskaya / Car on thick Lake Baikal ice, Lake Baikal, Siberia, Russia, March. Property released.

Olga Kamenskaya / Ice pile of broken shelf ice, near the shore of Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Pyramidal ice fragment reflected on the surface of Lake Baikal. Ice fragment acting as a prism refracting light into rainbow. Siberia, Russia, March.

Olga Kamenskaya / Ice fragment reflected in the ice of Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Ice fragment reflected in the ice of Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Ice fragment on crack in Lake Baikal ice, Siberia, Russia, March.

Olga Kamenskaya / Man looking into ice hole dug for ice diving, Lake Baikal, Siberia, Russia, March. Model released.

Olga Kamenskaya / Clear panes of ice on Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Clear pane of ice, Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Cracks in the ice of Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Cracks in the ice of Lake Baikal, Siberia, Russia, March.

Theo Bosboom,Theo Bosboom / Plant covered in with hoarfrost, reflected in water, Schiermonnikoog, the Netherlands, March 2013

Jussi Murtosaari / Whooper Swans (Cygnus cygnus) on a frozen lake, Finland, January

Bence Mate / Great egret (Ardea alba) and Grey heron (Ardea cinerea) fighting over a fish, Lake Csaj, Kiskunsagi National Park, Hungary

Sven Zacek / Frozen lake at night in under the Milky Way. Flatanger, Norway, January 2010.

Sven Zacek / Frozen leaf in lake ice. Southern Estonia, April.

Sven Zacek,Sven Zacek / Dawn over frozen Lake Peipsi, with sheet ice formations caused by strong wind. Eastern Estonia, December 2012.

Sven Zacek,Sven Zacek / Baltic sea is freezing up along the northern coast of Estonia. Lahemaa National Park, Estonia, January 2012.

Andrew Parkinson / 2020VISION / Moorhen (Gallinula chloropus) adult walking on frozen lake at dusk, backlit, Derbyshire, UK, February

Juan Carlos Munoz / Ice on lake, Plitvice Lakes National Park, Lika, Croatia, Europe, January

Nick Upton / Mallard (Anas platyrhynchos) drake sliding on fresh snow after landing on frozen lake surface, Wiltshire, UK, February

Graham Eaton / View of frozen Llynnau Mymbyr, a mountain lake, with fog partly revealing a mountain ridge, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / Underwater view of a mountain lake with frozen surface, Llyn Idwal, Snowdonia NP, Gwynedd, Wales, UK, December

Oriol Alamany / Grey glacier over Grey lake, Torres del Paine National Park, Patagonia, Chile

Sven Zacek / Frozen bubbles captured in ice on the surface of lake. South Estonia, Europe, January 2008.

Andrew Parkinson / Mute swan (Cygnus olor) drinking from the surface of a frozen lake, Derbyshire, UK, March.

Graham Eaton / Ice on lake surface seen from below. Llyn Idwal, Snowdonia, Wales, December 2010.

Graham Eaton / Under the ice scene of freshwater frozen lake. Llyn Dinas, Snowdonia, Wales, December 2010.

Radomir Jakubowski / Mountains and a freezing lake in Rondane National Park, Norway, September 2010. Winner, Fritz Polking Junior Award portfolio, GDT 2011 Competition.

Jeff Wilson / Frozen Planet team tent at Lake Hoare Camp, Dry Valleys, Antarctica, December 2009. Taken on location for the BBC series, Frozen Planet.

Bryan and Cherry Alexander / Ice-fishing huts on Mille Laks Lake. Minnesota, USA, 1985.

Andrew Parkinson / Mute swan (Cygnus olor) walking across frozen lake during a blizzard. Derbyshire, UK, January (non-ex)

Andrew Parkinson / Mute swan (Cygnus olor) walking across a frozen lake during a blizzard. Derbyshire, UK, January (non-ex)

Andrew Parkinson / Coot (Fulica atra) portrait, revealing the size of its enormous feet as it crosses a frozen lake. Derbyshire, UK, January (non-ex) Highly commended in the Portfolio category of the BWPA Competition 20...

Andrew Parkinson / Mallard (Anas platyrhynchos) male standing on a frozen lake during a snowfall, Derbyshire, UK. (non-ex)

Guy Edwardes / Fjallsarlon glacial lake, edge of Vatnajokull glacier with reflections, Vatnajokull NP, Iceland, June 2009

Graham Eaton / Underneath the ice of Llyn Dinas lake, Snowdonia NP, Wales, December

Graham Eaton / Underneath the ice of Llyn Dinas lake, Snowdonia NP, Wales, December. Commended image in the LANDSCAPE PHOTOGRAPHER OF THE YEAR awards competition 2011

Thomas Lazar / Ice hanging from arch in sea cave carved in soft sandstone cliffs, frozen lake, Squaw Bay, Lake Superior, Apostle Islands National Lakeshore, Wisconsin, USA, February 2009

Uri Golman / Aerial view of Meltwater lake, Greenland. August 2008.

Matthias Breiter / Polar Bear (Ursus maritimus) cooling off on a frozen lake, Churchill, Manitoba, Canada

Wild Wonders of Europe / Zacek / View over snow covered trees, with decreasing snow cover as altitude drops to a frozen snow covered lake in the distance, Riisitunturi National Park, Finland, February 2009. WWE INDOOR EXHIBITION

Wild Wonders of Europe / Zacek / View over snow covered trees, with decreasing snow cover as altitude drops to a frozen snow covered lake in the distance, Riisitunturi National Park, Finland, February 2009

Guy Edwardes / Ice patterns on surface of frozen lake, Snowdonia National Park, Gwynedd, Wales, UK, December 2008

Mark Brownlow / Rebreather instructor Ian Thomas and cameraman Didier Noirot prepare to dive under the ice, Lake Baikal, world's deepest and oldest (and largest by volume) freshwater lake, Siberia, Russia. BBC Plane...

Mark Brownlow / Looking down on frozen surface of Lake Baikal, world's deepest and oldest (and largest by volume) freshwater lake, Siberia, Russia. BBC Planet Earth series, April 2005

Mark Brownlow / Mark Brownlow, producer of Freshwater programme for BBC Planet Earth series, behind ice sheet, on location at Lake Baikal, world's deepest and oldest (and largest by volume) freshwater lake, Siberia,...

SIMON KING / Blue Ice on frozen lake with air bubbles, Antarctica.

Staffan Widstrand / Lake ice, 4metres deep. Ellesmere Island, Canada. NOT AVAILABLE FOR ADVERTISING

Jim Brandenburg / Moose Lake shoreline covered in frost, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) walking on frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) running across frozen Kawishiwi Lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio crossing frozen lake, Minnesota

Konrad Wothe / Loisach River covered with a dusting of fresh snow, Lake Kochel, Upper Bavaria, Germany

Espen Bergersen / Barrow's goldeneye (Bucephala islandica) in partly frozen lake. Iceland, May.

Jami Tarris / Frozen lake, Lake Tsagaan, Khovsgol, Mongolia

Ingo Arndt / Ice and rocks on shore of Lake Baikal. Siberia, Russia. February 2019.

Ingo Arndt / Minibus parked on ice with rock cliffs on shore, reflected in Lake Baikal, Siberia, Russia. February 2019.

Ingo Arndt / Cracks in clear ice of Lake Baikal, Siberia, Russia. February.

Ingo Arndt / Ice crystals on icicles. Lake Baikal, Siberia, Russia. February.

Ingo Arndt / Snow blowing in wind, over cracks in the clear ice of Lake Baikal. Siberia, Russia. February.

Ingo Arndt / Ice structures on surface of Lake Baikal, Siberia, Russia. February.