Guy Edwardes / Porth Nanven at sunset, Cot Valley, Cornwall, England, UK. September 2015.

Niall Benvie / Cliff at Vik beach, light by torchlight, Iceland, March 2015.

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) walking along a ledge . Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) sitting on sandstone cliffs . Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) group resting on rocky ledge. Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) rear view sitting, gathered on sandstone cliffs . Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) group of females feeding on potatoes left as an offering at a temple. Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) juveniles playing . Jodhpur, Rajasthan, India. March.

Chris & Monique Fallows / Orca (Orcinus orca) pod hunting common dolphin (Delphinus delphis) False Bay, South Africa.

Espen Bergersen / The Reynisdrangar rock formation, Vik, Iceland. October 2017

John Shaw / Desert bighorn sheep (Ovis canadensis nelsoni) rams on steep sandstone wall. Valley of Fire State Park, Nevada, USA. February.

John Shaw / Desert bighorn sheep (Ovis canadensis nelsoni) rams on steep sandstone wall. Valley of Fire State Park, Nevada, USA. February.

Pal Hermansen / Brunnich's guillemot (Uria lomvia) in flight, seen from below at Alkefjellet Bird Cliff, Svalbard, Norway, July.

Niall Benvie / Storm waves crashing against cliffs below lighthouse on the coast of Svortuloft, Iceland April 2016.

Niall Benvie / Storm waves breaking against cliffs at Svörtuloft, Iceland April 2016.

Ross Hoddinott / Durdle Door rock arch in evening light, Lulworth Cove, Dorset, England, UK, September 2015.

Ross Hoddinott / Trevose Head Lighthouse at dusk, Cornwall, England, UK. October 2015.

Mark Carwardine / Australasian gannet / Takapu (Morus serrator) breeding colony on cliffs, Muriwai gannet colony, Auckland, North Island, New Zealand, June

SCOTLAND: The Big Picture / View along Trotternish Ridge in winter, Isle of Skye, Scotland, UK, March 2014.

Terry Whittaker / Bird nesting cliffs at Haeavikurbjarg, Hornvik, Hornstrandir, Iceland. July

Sandra Bartocha / Limestone coast on Baltic Sea at Ernst-Moritz-Arndt-Lookout. Ruegen, Jasmund National Park, Ancient Beech Forest UNESCO Heritage Site, Germany, Europe. December 2015.

Merryn Thomas / Paracas Beach, Paracas National Reserve, Ica Region, Peru. November 2013.

Andres M. Dominguez / Razorbill (Alca torda),pair on cliff, Farne Islands, Northumberland, England, UK, June.

Andres M. Dominguez / Great cormorant (Phalacrocorax carbo) perched on cliff face, Farne Islands, Northumberland. England, UK, June.

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) playing on the cliff tops at sunrise . Jodhpur, Rajasthan, India. March.

Peter Cairns / 2020VISION / Northern gannet (Morus bassanus) colony, Hermaness National Nature Reserve, Unst, Shetland Isles, Scotland, UK, July.

Peter Cairns / 2020VISION / Northern gannet (Morus bassanus) colony, Hermaness National Nature Reserve, Unst, Shetland Isles, Scotland, UK, July.

David Pattyn / Razorbill (Alca torda) pair sitting at the edge of a cliff. Great Saltee, Saltee Islands, County Wexford, Republic of Ireland, June.

David Pattyn / Razorbill (Alca torda) pair sitting at the edge of a cliff. Great Saltee, Saltee Islands, County Wexford, Republic of Ireland, June.

David Pattyn / Razorbill (Alca torda) pair preening each other. Great Saltee, Saltee Islands, County Wexford, Republic of Ireland, June.

David Pike / Atlantic puffin (Fratercula arctica) Skomer Island, Pembrokeshire, May.

Inaki Relanzon / Ruined church of Saint Vincente, Finestres, Montsec de l'Estall, Aragon, Spain. December 2012.

Inaki Relanzon / Ruined church of Saint Vincente, Finestres, Montsec de l'Estall, Aragon, Spain. December 2012.

Shattil & Rozinski / Rock pigeons (Columba livia) perched on a rock face overlooking Purgatoire River Canyon, Colorado, USA, July.

Loic Poidevin / Western Gull (Larus occidentalis) adult nesting, British Columbia, Canada, June.

Loic Poidevin / Black Legged Kittiwake (Rissa tridactyla) nesting, British Columbia, Canada, June.

Loic Poidevin / Black Legged Kittiwake (Rissa tridactyla) pair nesting, British Columbia, Canada, June.

Konrad Wothe / Chestnut-fronted Macaws (Ara severa) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Red-and-green Macaws (Ara chloroptera) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Red-and-green Macaws (Ara chloroptera) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Red-and-green Macaws (Ara chloroptera) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Red-and-green Macaws (Ara chloroptera) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Chestnut-fronted Macaws (Ara severa) and Dusky-headed Parakeets (Aratinga weddellii) at claylick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Mealy Amazons (Amazona farinosa farinosa) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Mealy Amazons (Amazona farinosa farinosa) and Chestnut-fronted Macaws (Ara severa) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Red-and-green Macaws (Ara chloroptera) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Red-and-green Macaws (Ara chloroptera) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Blue-headed Parrots (Pionus menstruus menstruus) and Dusky-headed Parakeets (Aratinga weddellii) at clay lick, Tambopata National Reserve, Peru, South America.

Konrad Wothe / Dusky-headed Parakeet (Aratinga weddellii) flock near clay lick, Tambopata National Reserve, Peru, South America.

Adrian Davies / Cliffs with Gannet (Morus bassanus) colony and tourist boat of birdwatchers, at Hermaness, Shetland, Scotland, May 2013.

Juan Carlos Munoz / Eurasian eagle owl (Bubo bubo) chick on cliff, captive, Cabarceno Park, Cantabria, Spain, June.

Juan Carlos Munoz / Eurasian eagle owl (Bubo bubo) chick, captive, Cabarceno Park, Cantabria, Spain, June.

Juan Carlos Munoz / Eurasian eagle owl (Bubo bubo) chick, captive, Cabarceno Park, Cantabria, Spain, June.

Juan Carlos Munoz / Eurasian eagle owl (Bubo bubo) chick, captive, Cabarceno Park, Cantabria, Spain, June.

Christophe Courteau / Landscape view of red cliffs of the Bockjorden, Woodfjord, Spitzbergen, Svalbard, Norway, June 2012.

Colin Varndell / Coast path between Thorncombe Beason and Eype Mouth showing Thorncombe Sands in the cliff face, Dorset, UK.

Peter Lewis / Cliffs with Sea thrift (Armeria maritima) at Lands End, Cornwall, England, UK, May 2012.

Peter Lewis / Snow on the beach at Burton Bradstock, Dorset, England, UK, December 2010.

Peter Lewis / Snow on the beach at Burton Bradstock, Dorset, England, UK, December 2010.

Jouan Rius / El Capitan at sunset, Yosemite National Park, California, USA, November 2012.

Juan Carlos Munoz / Tourists walking along the coastal route near The Amphitheatre, Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, Europe, June 2011

Juan Carlos Munoz / Tourists with compact cameras walking along Giant's Causeway, UNESCO World Heritage Site. Antrim County, Northern Ireland, Europe. June 2011

Wild Wonders of Europe / Widstr / Wallcreeper (Tichodroma muraria) Trigrad Gorge, Western Rhodope Mountains, Bulgaria, May 2013.

Wild Wonders of Europe / Widstr / Trigrad Gorge, Western Rhodope Mountains, Bulgaria, May 2013.

Wild Wonders of Europe / Widstr / Trigrad Gorge, Western Rhodope Mountains, Bulgaria, May 2013.

Eric Baccega / Black-legged kittiwakes (Rissa tridactyla) nesting on a cliff face, British Columbia, Canada, June.

Eric Baccega / Black-legged kittiwakes (Rissa tridactyla) nesting on a cliff face, British Columbia, Canada, June.

Eric Baccega / Black-legged kittiwakes (Rissa tridactyla) nesting on a cliff face, British Columbia, Canada, June.

Nick Upton / Four Feral pigeons / Rock Doves (Columba livia) including two lost Racing pigeons with rings on, perched on a ledge on a coastal cliff, Cornwall, UK, April.

Roland Seitre / Coastal archway at Yate, South Province, New Caledonia.

Roland Seitre / Landscape of Jokin cliffs and the sea, Lifou, Loyalty Islands Province, New Caledonia, August 2012

Colin Varndell / View east from White Nothe with Bat's Head, Swyre Dead in foreground. Dungy Head in distance. Jurassic Coast, Dorset, UK. October 2008

Colin Varndell / Contorted strata at Man O'War Bay, Jurassic Coast, Dorset. April 2013

Colin Varndell / Gad Cliff, on the Jurassic Coast, east Dorset. April

Colin Varndell / Coastal landscape at Swyre Head and Bat's Head west of Durdle Door, Dorset, UK February 2013

Claudio Contreras / Californian sea lion (Zalophus californianus) calling on rocky coast, Espiritu Santo Island National Park, Sea of Cortez (Gulf of California), Mexico, April

Claudio Contreras / Californian sea lion (Zalophus californianus) calling on rocky coast, Espiritu Santo Island National Park, Sea of Cortez (Gulf of California), Mexico, April

Claudio Contreras / Californian sea lion (Zalophus californianus) calling on rocky coast, Espiritu Santo Island National Park, Sea of Cortez (Gulf of California), Mexico, April

Claudio Contreras / Californian sea lion (Zalophus californianus) calling on rocky coast, Espiritu Santo Island National Park, Sea of Cortez (Gulf of California), Mexico, April

Claudio Contreras / Californian sea lion (Zalophus californianus) calling on rocky coast, Espiritu Santo Island National Park, Sea of Cortez (Gulf of California), Mexico, April

Markus Varesvuo / Two Guillemots (Uria aalge), one vocalising, Vardo, Norway, March.

Markus Varesvuo / Large flock of Guillemots (Uria aalge) taking off from a cliff in falling snow, Vardo, Norway, March.

Loic Poidevin / Little Owl (Athene noctua) in limestone cliff, France, April

Loic Poidevin / Little Owl (Athene noctua) in limestone cliff, France, April

Franco Banfi / Red-and-green Macaw (Ara chloropterus) by clay cliff, Buraco das Araras, Bonito, Mato Grosso do Sul, Brazil

David Pike / Atlantic puffin (Fratercula arctica) Skomer Island, Pembrokeshire, May.

Guy Edwardes / Gorse (Ulex europaeus)on cliffs above St Oswald's Bay, Dorset, England, UK, May.

Sylvain Cordier / Gelada baboon (Theropithecus gelada) group, male in foreground with females and young in background. Near cliff where Baboons spend the night. Debre Libanos, Rift Valley, Ethiopia.

Sylvain Cordier / Snow leopard (Uncia uncia) pair on snow covered rocky slope. Altai Mountains, West Mongolia. February.

Pedro Narra / Bottlenose dolphin (Tursiops truncatus) near surface, Sado Estuary, Arribida, Portugal,

Philippe Clement / Tre Cime di Lavaredo / Drei Zinnen, three distinctive mountain peaks in the Sexten Dolomites seen from WW1 cave shelter, South Tyrol, Italy, October 2019

Philippe Clement / Sea stacks and sea cliffs at Eshaness / Esha Ness, Peninsula, Northmavine, Mainland, Shetland Islands, Scotland, UK, May. Digital composite

Philippe Clement / Sea cliffs and stacks at Eshaness / Esha Ness at sunset during approaching storm in Northmavine, Mainland, Shetland Islands, Scotland, UK, May

Philippe Clement / Great skua (Stercorarius skua) in flight and spectacular coastline with sea stacks and cliffs, home to breeding sea birds at Hermaness, Unst, Shetland Islands, Scotland. May 2018. Digital composite

Guy Edwardes / Durdle Door in winter, Jurassic Coast World Heritage Site, Dorset, England, UK

Guy Edwardes / Milky Way over Stair Hole, Lulworth, Jurassic Coast World Heritage Site, Dorset, England, UK, August.