Yva Momatiuk & John Eastcott / Minden / Calcium tufa formations, Mono Lake, California

Vincent Grafhorst / Minden / River in sandstone cave, Sof Omar Cave, Ethiopia

Vincent Grafhorst / Minden / Crater of active volcano at twilight, Erta Ale, Danakil Depression, Ethiopia

Jack Dykinga / Rainbows over the Santa Catalina Mountains at sunset following a powerful monsoon storm, Sonoran Desert, Arizona, USA.

Pal Hermansen / Flock of birds near wind turbines in North Sea. Rickelsbuller Koog nature reserve, North Frisia, Schleswig-Holstein, Germany. November 2019.

Edwin Giesbers / Orange tip butterfly (Anthocharis cardamines) two females on Cuckooflower (Cardamine pratensis). The Netherlands. March.

Guy Edwardes / Waves crashing against sea wall and Porthcawl Lighthouse during Storm Ciara, people storm watching surrounded by waves. Mid Glamorgan, Wales, UK. February 2020.

Jack Dykinga / Yellow-headed blackbird (Xanthocephalus xanthocephalus) flock murmuration as they take off from the marsh at dawn, Whitewater Draw, Arizona State Game and Fish Reserve, USA. January.

Shane Gross / Galapagos Sea Lion (Zalophus californianus wollebacki) resting on rocks at sunset on North Seymour Island, Galapagos, Ecuador. December.

Shane Gross / Galapagos sea lion (Zalophus wollebaeki) plays in the surf, San Cristobal Island, Galapagos, Ecuador. December.

Danny Green / Polar bear (Ursus maritimus) resting on sea ice, view from above. Svalbard, Norway, June 2018.

Guy Edwardes / Milky Way above Durdle Door rock arch. Jurasic Coast, Dorset, England, UK. August 2019. Composite image.

Heather Angel / Man using pole to propel bamboo raft on Lijang / Li River, Karst peaks beyond. At dawn, Lijiang River Scenic Zone, Yangshuo county, Guangxi, China.

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

Theo Bosboom / Rocks and sea stacks in the surf at Playa del Silencio in Asturias on the Northwest coast of Spain. May 2015

Theo Bosboom / Winter landscape at Luskentyre beach, Isle of Lewis, Scotland, North Harris in the background. February 2018.

Theo Bosboom / Winter sunsrise at Seilebost beach, Isle of Harris, Scotland. February 2018

Theo Bosboom / Powerful waves rolling in at the Atlantic coast of Iceland near Dyrholey during a powerful winter storm. February 2016

Theo Bosboom / Wave breaking in front of the two famous sea stacks Risin and Kellingin on the Faroe Islands. March 2018.

Theo Bosboom / Sea stacks consisting of flysch rock battered by the incoming tide, playa de Gueirua, Asturias, Northwest Spain. October 2015

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddling, males incubating eggs, on sea ice under full moon in polar night. Atka Bay, Antarctica. July 2017.

Stefan Christmann / Member of BBC Dynasties crew photographing on sea ice in light of full moon, during polar night. Atka Bay, Antarctica. July 2017.

Stefan Christmann / Sea ice, during polar night. Atka Bay, Antarctica. July 2017.

Stefan Christmann / Moon rising over sea ice during polar night. Atka Bay, Antarctica. June 2017.

Sven Zacek / Bearded seal (Erignathus barbatus) sunbathing on iceberg broken off from glacier. Kongsfjorden fjord, Spitsbergen, Norway. June 2014.

Franco Banfi / Diver exploring around an iceberg. Tasiilaq, East Greenland. April 2018.

Franco Banfi / Diver exploring an iceberg in Greenland Sea. Tasiilaq, East Greenland. April 2018.

Guy Edwardes / Hawes, Wensleydale, Yorkshire Dales National Park, North Yorkshire, England, UK. June.

Guy Edwardes / Dry-stone walls and barns in Wensleydale, Yorkshire Dales National Park, North Yorkshire, England, UK, June 2016.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) silverback sitting on boundary wall between Volcanoes National Park and a Potato crop, looking into valley. Area to be restored to forest. Rwanda.

Chase Dekker / Car on road in driving through colorul autumn forest, Green Mountains, Vermont

Tim Fitzharris / Joshua Tree (Yucca brevifolia) group and boulders, Joshua Tree National Park, California

Tim Fitzharris / Saguaro (Carnegiea gigantea) cactus, Neale Mesa and Aquarius Mountains, Arizona

Tim Fitzharris / Forest and mountains in autumn, San Juan Mountains, Colorado

Konrad Wothe / Mountains at night with star trails, Kampenwand Mountain, Alps, Upper Bavaria, Germany

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) breaching, Maui, Hawaii

Christian Ziegler / Rainforest, Rwenzori Mountains, Uganda

Christian Ziegler / Mount Pieter Botte, or Nulbullulul, Daintree National Park is one of largest intact areas of Cassowary habitat, Queensland, Australia

Tim Fitzharris / Pine (Pinus sp), ancient tree at night, Mount Scott, Wichita Mountains National Wildlife Refuge, Oklahoma, digital composite

Tim Fitzharris / Seastacks and moon, Ruby Beach, Olympic National Park, Washington, digital composite

Paul Souders/ Worldfoto / Iceberg, Disko Bay, Ilulissat, Greenland

Shane P. White / Coastal village in winter, Reine, Iceland

Shane P. White / Iceberg, Ilulissat, Greenland

Shane P. White / Northern lights, Hvammstangi, Iceland