Norbert Wu / Atlantic Bluefin Tuna (Thunnus thynnus) examinded with flashlights by buyers to determine the quality of the meat, Tsukiji Market, Tokyo, Japan

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.

Pat Tuson / People buying tomatoes from stall Alexandra Palace Farmers Market, Haringey, London, UK, August 2014.

Suzi Eszterhas / Cotton-top Tamarin (Saguinus oedipus) conservationists selling eco-mochil bags, traditional style bags made out of littered plastic bags, sold to tourists to raise money for tamarin conservation, Proy...

Eric Baccega / Himba woman in traditional clothing buying food at the supermaket, city of Opuwo, Kaokoland, Namibia. October 2015

Mike Wilkes / Gambian women buying fish from fishermen in colourful boats on the beach, Gambia, West Africa, November 2012.

Mike Wilkes / Gambian women buying fish from fishermen in colourful boats on the beach, Gambia, West Africa, November 2012.

Enrique Lopez-Tapia / Man buying vegetables from a stall in Skardu bazaar, Pakistan, June 2007

Sebastian Kennerknecht / Fisherman inspecting and bidding on the days catch, Hawf Protected Area, Yemen

Florian Möllers / Chinese buying fresh vegetables and herbs from women at market in Zhouzhi town, Qinling Mountains, Shaanxi, China, March 2006

Pete Oxford / Produce market where most goods are brought in by ship from the mainland, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Produce market where most goods are brought in by ship from the mainland, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Produce market where most goods are brought in by ship from the mainland, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Peter Cairns / naturepl.com / People buying postcards at visitor centre at Lake Hornborga during spring migration of Eurasian Cranes (Grus grus), Sweden. April 2008

Merryn Thomas / Woman buying dried fruit from night souk, Djemaa el-Fna town square, Marrakech, Morocco. November 2008.

Tim Laman / 'Nature Air' aircraft flying over rainforest. This airline is carbon neutral, offsetting their carbon use by buying rain forest in the Osa Peninsula. Golfito, Puntarenas, Costa Rica.

Diana Richards Cronk / Cameraman Hugh Maynard buying Ostrich egg from Bushman, Kalahari desert, Botswana, on location for BBC television programme 'The Living Planet - Baking Deserts' 1981

Flip Nicklin / Chinook Salmon (Oncorhynchus tshawytscha) in a fishmarket, Alaska

Sue Flood / Bai people at market buying live chickens, Dali, Yunnan Province, China

Colin Monteath / Helmeted Guineafowl (Numida sp) basket full, sold for sacrifice during Diwali festival, Kathmandu, Nepal

Colin Monteath / Snow Leopard (Uncia uncia) and fox fur hat inspected by tourist, Ulan Baatar, Mongolia

Gavin Hellier / People buying fruit at local market, Phnom Penh Cambodia

Bengt Lundberg / Man buying durian fruit {Durio zibethinus} Singapore

Onne van der Wal / A local woman selling her crafts to the crew of a visiting yacht, Tonga, South Pacific.

Mike Wilkes / The Gambians buying and selling fish on Tanji beach, The Gambia, December 2010

Onne van der Wal / Local woman buying bananas in a market, Seychelles, Indian Ocean.

Pete Oxford / Shortfin Mako (Isurus oxyrhynchus) and Smooth Hammerhead Shark (Sphyrna zygaena) in the area's largest fish market for artisanal fishermen, Santa Rosa Fishing Village, Santa Elena Peninsula, Ecuador

Mark Moffett / Bob Macy and Ted Papenfuss buying supplies for field work at Kerman Bazaar, Iran

Mark Moffett / Russian herpetologist Nikolai Orlov purchasing a squirrel from villager, Tam Dao National Park, Vietnam

Mark Moffett / Director of Tula Zoo, Sergei Ryabov, buying beetles from locals for Russian museum, Tam Dao National Park, Vietnam

Eric Baccega / Kayan Lahwi woman with brass neck coils and traditional clothing buying potatoes at the market. The Long Neck Kayan (also called Padaung in Burmese) are a sub-group of the Karen ethnic people from Bur...

Eric Baccega / Kayan Lahwi woman with brass neck coils and traditional clothing buying Thai food at the market. The Long Neck Kayan (also called Padaung in Burmese) are a sub-group of the Karen ethnic people from Bu...

Enrique Lopez-Tapia / Woman carrying shopping on head past the Great Mosque,Porto Novo, Benin, 2020.