Ismaele Tortella / Eurasian otter (Lutra lutra) hunting in a shoal of Atlantic herring (Clupea harengus), northern Norway, March

Jeff Foott / Jaguar (Panthera onca) walking along river bank, Cuiaba River, Pantanal Matogrossense National Park, Pantanal, Brazil.

Jeff Foott / Jaguar (Panthera onca) on river bank, Cuiaba River, Pantanal Matogrossense National Park, Pantanal, Brazil.

Ingo Arndt / Two European river otters {Luyra lutra} resting a on grass bank. Captive

Laurent Geslin / European beaver (Castor fiber) at river bank in urban environment at night, Grenoble, France, August.

Sven Zacek / Aerial view of Rver Koiva, and the border between Estonia and Latvia in Southern Estonia, Valgamaa, Estonia. August 2014. Estonia is on the left side of the river and Latvia on the right bank.

Pete Oxford / Gayal / Mithun (Bos frontalis) on river bank. Arunachal Pradesh, North East India. November 2014.

Suzi Eszterhas / Capybara (Hydrochoerus hydrochaeris) mother and pup on riverbank, Pantanal, Brazil

Ben Cranke / Capybara (Hydrochoerus hydrochaeris) family group together on a river bank, Mato Grosso, Pantanal, Brazil. August.

Sean Crane / Jaguar (Panthera onca) standing on a river bank, Pantanal, Brazil

Peter Lewis / Fireworks over the London Eye on New Years Eve 2012. London, England, UK.

Anup Shah / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd crossing the Mara River and clambering up steep bank. Masai Mara National Reserve, Kenya, July