Sylvain Cordier / Monarch butterfly (Danaus plexippus), wintering from November to March in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico.

Krijn Trimbos / Great crested grebe (Podiceps cristatus) pair in courtship display, The Netherlands. March.

Pal Hermansen / European moose (Alces alces) bulls near houses, Nordland, Norway. July.

Denis-Huot / African elephant (Loxodonta africana) herd at sunset, Masai-Mara Game Reserve, Kenya. January.

David Pattyn / Black necked grebe (Podiceps nigricollis) pair at night, performing their courtship dance during the mating season, with street lights reflected in the water. The Netherlands.April 2014

Denis-Huot / Lioness (Panthera leo) and Thomson's gazelles (Eudorcas thomsonii) silhouetted at sunset, Masai-Mara game reserve, Kenya.

Sven Zacek / Roe deer (Capreolus capreolus) buck with does, Vesneri, Estonia, March. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Denis-Huot,Denis-Huot / Topi (Damaliscus korrigum) at sunset, Masai-Mara Game Reserve, Kenya

Sven Zacek / River meeting the sea on the Baltic coast of Estonia. Europe, May 2011.

Alex Hyde / Tropical rainforest meeting the sea. Masoala Peninsula National Park, north east Madagascar, October 2009

Kristel Richard / A Sika deer stag rests among a band of wild Misaki-uma horses (Equus ferus caballus) in the Cape Toi Reserve, Miyazaki Prefecture, Kyushu Island, Japan.

Doug Perrine / Traditional men's meeting house, Palau, Micronesia

Luiz Claudio Marigo / Meeting of waters of the River Solimoes and darker River Negro, Amazonas, Brazil. Rio

Jim Brandenburg / Aerial view of Namib Desert meeting Atlantic Ocean at the Skeleton Coast, Namibia

Suzi Eszterhas / Common Wombat (Vombatus ursinus) orphan met by children, Bonorong Wildlife Sanctuary, Tasmania, Australia

Heidi & Hans-Juergen Koch / Colubrid Snake (Elaphe sp) two making initial contact, using tongue (Nasovomeral sense) to identify friend, enemy, or prey

Gerry Ellis / African Elephant (Loxodonta africana) young bulls engage in greeting ritual, Amboseli National Park, Kenya

Thomas Mangelsen / Polar Bear (Ursus maritimus) investigating chained sled dog, Churchill, Manitoba, Canada

Mark Raycroft / Australian Shepherd (Canis familiaris) puppy meeting sheep

Mark Moffett / Green and Black Poison Dart Frog (Dendrobates auratus) meets a Tarantula, Taboga Island, Panama Tarantulas eat frogs but avoid Poison Dart Frogs, yet on Taboga, such encounters are common and Tarantul...

Roger Powell / Greater flamingoes (Phoenicopterus roseus) meeting and selecting mates in a disused salt pan. La Tancada Salinas Nature Reserve, Ebro Delta, Catalonia, Spain

Doug Gimesy / A meeting at a farming co-operative run by members of Cheetah Conservation Botswana (CCB) and the Department of Wildlife and National Parks. Phale Max Seele from CCB is talking to farmers to help supp...

Doug Gimesy / A meeting at a farming co-operative run by members of Cheetah Conservation Botswana (CCB) and the Department of Wildlife and National Parks. A representative of DWNP explaining the differences between...

Doug Gimesy / A meeting at a farming co-operative run by members of Cheetah Conservation Botswana (CCB) and the Department of Wildlife and National Parks. A representative of DWNP explaining the differences between...

George Sanker / White-tailed deer (Odocoileus virginianus) fawn face to face with Wild turkey (Meleagris gallopavo), in woodland clearing. Acadia National Park, Maine, USA. August.

Mike Potts / Glacier meeting Southern ocean on coast of Buckle Island, Balleny Islands, East Antarctica. January 2018.

Cyril Ruoso / Przewalski horse (Equus ferus przewalskii) stallion facing stallion in acclimatisation enclosure. Stallion in enclosure will be released into wild after a year. Great Gobi B Strictly Protected Area, M...

Tui De Roy / Red-footed booby (Sula sula), adults and chick at nest. Gardner Islet, Floreana Island, Galapagos.

Sylvain Cordier / RF - Monarch butterfly (Danaus plexippus), wintering from November to March, in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico. (This image may be licensed either a...

Sylvain Cordier / RF - Monarch butterfly (Danaus plexippus), wintering from November to March, in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico. (This image may be licensed either a...

Sylvain Cordier / RF - Monarch butterfly (Danaus plexippus), wintering from November to March, in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico. (This image may be licensed either a...

Ashley Cooper / Solar panels n the Quaker Meeting House in keswick, Lake District, UK. March 2012

Will Watson / 'Balfour-Browne Club' annual water beetle field meeting 2017 in acid pool, Landschap de Liereman Nature Reserve, Antwerpen Province, Belgium.

Jiri Lochman / Tourists meeting Indo-Pacific bottlenose dolphin (Tursiops aduncus) at Monkey Mia, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.

Klein & Hubert / Tabby and white kitten meeting adult male tabby cat for first time, France.

Klein & Hubert / Tabby and white kitten meeting adult male tabby cat for first time, France.

Anup Shah / Briefing before gorilla trekking for tourists. Virunga National Park, Democratic Republic of Congo, March 2016.

Carol Walker / Head portrait of black Andalusian stallion and mare meeting for the first time in southern Spain, Europe.

Carol Walker / Wild Mustang horses interacting, Pryor mountains, Montana, USA. June.

Carol Walker / RF - Three wild Mustang bachelor stallions, head portrait of two pinto and one black meeting at waterhole, McCullough Peaks, Wyoming, USA. June. (This image may be licensed either as rights managed or...

Carol Walker / RF - Two wild Mustang stallions meeting in trees, Carrott Island, South Carolina, USA. (This image may be licensed either as rights managed or royalty free.)

Carol Walker / RF - Head portrait of black Andalusian mare and stallion meeting for the first time in Spain, Europe. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - King penguins (Aptenodytes patagonicus) in group. Holmestrand, South Georgia. January. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - Wandering albatross (Diomedea exulans) head portrait, face to face. Albatross Island, South Georgia. January. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - Wandering albatross (Diomedea exulans) pair displaying. Albatross Island, Bay of Isles, South Georgia. January 2015. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - Wandering albatross (Diomedea exulans) pair displaying, Albatross Island, Bay of Isles, South Georgia. January 2015. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - Wandering albatross (Diomedea exulans) pair displaying. Albatross Island, Bay of Isles, South Georgia. January 2015. (This image may be licensed either as rights managed or royalty free.)

Chris Mattison / RF - Marbled Salamander (Ambystoma opacum) with Brown lipped snail (Cepaea nemoralis) in leaves, captive from North America. (This image may be licensed either as rights managed or royalty free.)