Bence Mate / Great egrets (Ardea alba) and Grey heron (Ardea cinerea) squabbling over fish, with some in flight. Blurred motion photograph, Lake Csaj, Pusztaszer, Hungary. February.

Bence Mate / Greenfinches (Carduelis chloris) and House sparrows (Passer domesticus) blurred long exposure photograph, Hungary, February.

Onne van der Wal / Yacht viewed from underwater, Saint Barths Bucket Super Yacht Regatta, Caribbean, March 2009.

Linda Pitkin / 2020VISION / Brown trout (Salmo trutta) in turbulent water at a weir, River Ettick, Selkirkshire, Scotland, UK, October

Graham Eaton / A low angle view of a waterfall, from within a mountain stream, Ogwen Cottage, Snowdonia NP, Gwynedd, Wales, UK, February

Graham Eaton / Underwater landscape within a mountain stream, showing water turbulence, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / View looking up a waterfall from within a stream, Snowdonia NP, Gwynedd Wales, UK, December

Graham Eaton / An underwater view of a mountain stream showing internal reflections on the water surface, Snowdonia NP, Gwynedd, Wales, UK, December 2009.

Michel Roggo / Turbulent water in Verzasca river, Ticino, Switzerland, February

Michel Roggo / Underwater landscape beneath waterfall, Baca River, Slovenia, June

Michel Roggo / Underwater landscape in Verzasca River, Ticino, Switzerland, September

Michel Roggo / Underwater landscape in Aare river, Canton of Berne, Switzerland, January