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

Morley Read / Aerial shot ascending over rainforest canopy at dawn, with the Rio Napo in background, a tributary of the Amazon, Napo Province, Ecuador, 2017. (non-ex)

Morley Read / Aerial tracking shot of a waterfall flowing over an old andesitic lava flow, Rio Pita Valley north of Cotopaxi Volcano, Ecuadorian Andes, 2018. (non-ex)

Martin Willis / Mangroves along coast and boat, Deluge Inlet, Hinchinbrook Island National Park, Queensland, Australia

Phil Savoie / Yellow legged mining bee (Andrena flavipes) female at nest burrow, River Monnow, Monmouthshire, Wales, UK, April.

John Cancalosi / Sonoran desert toad (Incilius alvarius) pair mating, with trail of spawn in water. Arizona, USA.

George Sanker / Great egret (Ardea alba) with prey in beak, in evening light. Myakka River State Park, Florida, USA, March. Sequence 2/2.

George Sanker / Great egret (Ardea alba) diving head into water to catch prey, in evening light. Myakka River State Park, Florida, USA, March. Sequence 1/2.

Heather Angel / Man using pole to propel bamboo raft on Lijang / Li River, Karst peaks beyond. At dawn, Lijiang River Scenic Zone, Yangshuo county, Guangxi, China.

Lucas Bustamante / Giant river otter (Pteronura brasiliensis) eating a catfish. Yasuni National Park, Orellana, Ecuador

Alan Williams / Beaver Bridge over River Conwy, near Betws-y-Coed, Snowdonia National Park, North Wales, UK, September 2018

Milan Radisics / Aerial shot of the Austurfljot glacial river, southern Iceland, August 2018.