Claudio Contreras / Atlantic sailfish (Istiophorus albicans) attacking school of Sardine (Sardinella aurita) bait ball, Isla Mujeres, Caribbean Sea, Mexico, February

Aflo / Northern sea nettle (Chrysaora Melanaster) floating, with Mackerel fry ( Carangidae) Izu, Japan. January.

Linda Pitkin / 2020VISION / Brown trout (Salmo trutta) fry on river bed, Cumbria, England, UK, September.

Ross Hoddinott / 2020VISION / School children carrying equipment to release salmon fry in the River Haddeo and to do invertebrate kick samples with Westcountry Rivers Trust (WRT) warden. Bury, Exmoor National Park, Somerset, UK. M...

Ross Hoddinott / 2020VISION / School child releases salmon fry in the River Haddeo, with Westcountry Rivers Trust (WRT) warden. Bury, Exmoor National Park, Somerset, UK. May 2012. Editorial use only

Mark Carwardine / Stephen Fry and Mark Carwardine with Brown lemurs on Lemur Island in Andasibe-Mantadia National Park, eastern Madagascar, while filming for BBC TV series 'Last Chance to See', November 2008

Mark Carwardine / Stephen Fry and Mark Carwadine after a mud bath in Borneo, filming for BBC TV series 'Last Chance to See', March 2009

Sergey Gorshkov / Salmon (Salmonidae) fry with egg case still attached, Lake Kuril, Kamchatka, Far East Russia, January

Nick Upton / Shoal of young sardines (Sardina pilchardus) swimming in various directions close to the shore in a shallow sandy bay, viewed from above water. Eastern Lesbos /Lesvos, Greece, August.

Nick Upton / Shoaling young sardines (Sardina pilchardus) swimming in shallow water in a sandy bay, casting shadows on the seafloor, viewed from above water. Eastern Lesbos / Lesvos, Greece, August.

David Woodfall / Young woman fishing for shrimp fry, looking in net to see the catch, Ganges Delta, Bangladesh, November 2008

David Woodfall / Large numbers of children fishing for shrimp fry on coastal margin land damaged by typhoon Sidr in November 2007, Sundarbans, Bangladesh, October 2008