Wim van den Heever / African elephant (Loxodonta africana) three big bull elephants spending the late afternoon at waterhole, Ol'Donyo Kenya.

Terry Whittaker / Common murre / guillemot (Uria aalge), Black-legged kittiwake (Rissa tridactyla) and Gull (Larus sp) eggs for sale at Reykjavik Weekend Market, Iceland. 2018.

SCOTLAND: The Big Picture / Wild venison producer, Forest to Fork, selling burgers at Farmers Market. Culbokie, Ross and Cromarty, Scotland, UK.

Neil Aldridge / Poultry farmer holds the carcasses of two hens, as well as the Red fox (Vulpes vulpes) that killed them. Although thousands of foxes are shot by farmers each year, this is the last fox this farmer sho...

Tony Wu / Ama diver back aboard boat after spending two hours collecting shellfish. Futo Harbour, Izu Peninsula, Shizuoka Prefecture, Japan. June 2010.

Tony Wu / Ama diver climbing aboard boat after spending two hours collecting seafood. Futo Harbour, Izu Peninsula, Shizuoka Prefecture, Japan. June 2010.

Roger Powell / Modern Russian deep-sea trawlers moored in Batsfjord Harbour. The collapse of fish stocks has seen such new boats spending less and less time at sea. Varanger, Norway

Colin Monteath / Caribou (Rangifer tarandus) herd gathering in valley after spending winter in Hunkher Mountains during spring round up, Mongolia

Colin Monteath / Caribou (Rangifer tarandus) herd gathering in valley after spending winter in Hunkher Mountains during spring round up, Mongolia

Colin Monteath / Caribou (Rangifer tarandus) herd being moved down valley by Tsataan herder after spending winter in Hunkher Mountains during spring round up, Mongolia

Colin Monteath / Caribou (Rangifer tarandus) herd being moved down valley by Tsataan herder after spending winter in Hunkher Mountains during spring round up, Mongolia

Tui De Roy / Espanola saddleback tortoise (Geochelone hoodensis). 'Diego', one of the three surviving adult males. This male was returned from the San Diego Zoo in 1977 for breeding purposes after spending...