SCOTLAND: The Big Picture / Grey heron (Ardea cinerea) hunting for food amongst moss with loch and Celtic rainforest in back ground, Scotland, UK, October..

Eric Baccega / Coalition of two African male lions (Panthera leo) resting on the banks of the Luangwa river, dry season, South Luangwa National Park, Zambia

Duncan Murrell / Rainforest and river outside the Batak village of Sitio Manggapin in Cleopatra's Needle Critical Habitat, Palawan, Philippines.

Nick Upton / Tilt shot of a dam constructed by Eurasian beavers (Castor fiber) on a section of the River Otter, Devon, England, UK, June 2018.

Oscar Dewhurst / Black-legged kittiwake (Rissa tridactyla) adult perched on the side of the Tyne Bridge, overlooking Newcastle and the Tyne. Newcastle, UK. July

Andy Rouse / Jaguar (Panthera onca) on riverbank , Pantanal, Brazil

Kerstin Hinze / Dipper (Cinclus cinclus) foraging in a stream, Harz National Park, Saxony-Anhalt, Germany, March.

Philippe Clement / European dipper (Cinclus cinclus) perched on rock in stream and looking around, Luxembourg, April.

Sandesh Kadur / Blue wildebeest (Connochaetes taurinus) crossing a river, Serengeti National Park, Tanzania.

Nick Garbutt / Red-and-green macaw (Ara chloropterus) flock flying in front of clay lick. Heath River, Tambopata / Bahuaja-Sonene Reserves, Amazonia, Peru / Bolivia border.

Shane P. White / Freshwater lagoons amid sand dunes, Lencois Maranhenses National Park, Brazil

Yashpal Rathore / Kottigehar dancing frog (Micrixalus kottigeharensis) male calling and displaying to attract female by waving foot, Agumbe, Western Ghats, India.

Yashpal Rathore / Asiatic elephant (Elephas maximus), herd drinking water and crossing Mountain River at dawn, Jim Corbett National Park, India.

Andy Rouse / Great crested grebe (Podiceps cristatus) swimming, backlit with morning light forming a bokeh affect on the water, Wales, UK, February. Highly commended in the Habitat Category of the BWPA (British W...

Jim Brandenburg / Forest on lake shore, Judd Lake, Superior National Forest, Minnesota

Floris van Breugel / Barrel cacti (Ferocactus pilosus) and Ocotillo overlook Palm oasis at sunrise, Anza-Borrego Desert State Park, California, USA March

Andy Rouse / African Leopard (Panthera pardus) jumping across river Maasai Mara, Kenya, Africa. August.

Andres M. Dominguez / European stonechat (Saxicola rubicola) male perched with mountainous habitat behind, Sierra de Grazalema Natural Park, southern Spain, February.

Eric Baccega / African elephant (Loxodonta africana) and black rhinoceros (Diceros bicornis) bathing at waterhole at night with moon, Okaukuejo, Etosha National Park, Namibia, Africa. Taken with infrared camera.

Wim van den Heever / African elephant (Loxodonta africana) drinking from water, Okavango Delta, Botswana.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female on heathland pool. Note wing of predated damselfly floating on water's surface under the spider. Dorset, UK. August.

Mark Bowler / Aerial view of Amazon River, with settlements and secondary rainforest, near Iquitos, Peru. July 2015.

Sven Zacek / Autumn trees on the Rapa River Delta, aerial view, Rapadalen Sarek National Park, Sweden, September 2009.

Pete Oxford / Chilean flamingo (Phoenicopterus chilensis) in Lago Azul with Torres del Paine, Torres del Paine National Park, Patagonia, Chile.

David Tipling / Common frogs (Rana temporaria) mating surrounded by spawn in pond, West Runton North Norfolk, England, UK, March.

David Tipling / Common frog (Rana temporaria) and spawn in pond. West Runton, North Norfolk, England, UK, March. Highly commended in the Habitat category of the BWPA Awards 2015.

Alex Hyde / Frogspawn from Common Frog (Rana temporaria), fisheye view showing pond habitat. Peak District National Park, Derbyshire, UK. March.

Jussi Murtosaari / Apollo butterfly (Parnassius apollo) in flight, Foglo, Ahvenanmaa / Aland Islands, Finland, July.

Denis-Huot / Aerial view of African elephants (Loxodonta africana) and African buffalo (Syncerus caffer) at a water hole during the dry season, Tsavo East National Park, Kenya. October.

Gabriel Rojo / Black caiman (Melanosuchus niger) on shore, Ibera Marshes, Corrientes Province, Argentina

Floris van Breugel / Black-billed shrike-tyrant (Agriornis montanus) in the snow with Mount Fitz Roy visible beyond. Patagonia, Argentina, June 2014.

Floris van Breugel / Two Guanacos (Lama guanicoe) at edge of lake with Cuernos del Paine beyond. Torres del Paine National Park, Chile, June 2014.

Floris van Breugel / Black-billed shrike-tyrant (Agriornis montanus) perched in snowy tree with Mount Fitz Roy visible beyond. Patagonia, Argentina, June 2014. Awarded in Land category, Wildlife Photographer of the Year 2...

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

Dong Lei / Purple bergenia (Bergenia purpurascens) in flower, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China.

Denis-Huot / Aerial view of Elephants (Loxodonta africana) at watering hole in the rainy season, Tsavo East National Park, Kenya.

Luiz Claudio Marigo / Yacare caiman (Caiman yacare) restingout of water, in front of Pink Ipe trees (Tabebuia ipe / Handroanthus impetiginosus) in flower, Pantanal, Mato Grosso State, Western Brazil.

Michel Roggo / Underwater river scene with freshwater plants and Tetra fish, Aquario Natural, Rio Baia Bonito, Bonito area, Serra da Bodoquena (Bodoquena Mountain Range), Mato Grosso del Sul, Brazil November/Decembe...

Luciano Candisani / Clouds reflected in flooded field at the end of the wet season, Pantanal, Brazil

Anup Shah / Japanese Macaque (Macaca fuscata) baby sitting on the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.

Robert Thompson / European common frog (Rana temporaria) on rock by waterfall, near Lac des Gloriettes dam, Pyrenees National Park, France, June.

Franco Banfi / Aquatic plants growing on bottom of the main spring at Rio Sucuri, Bonito, Mato Grosso do Sul, Brazil

Franco Banfi / Piraputanga fish (Brycon hilarii) split level, in the main spring at Rio Sucuri, Bonito, Mato Grosso do Sul, Brazil.

Anup Shah / African elephants (Loxodonta africana) drinking at a waterhole. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / African elephants (Loxodonta africana) wallowing in a waterhole. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / African elephants (Loxodonta africana) at a waterhole. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Eastern white-bearded wildebeest (Connochaetes taurinus) herd crossing the Mara River watched by tourists. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Michel Roggo / Anavilhanas Archipelago in the Rio Negro, and flooded forest or 'Varzea forest' Amazonas, Brazil. February 2011

Tim Laman / Aerial view of morning mist above the Tiputini River in Yasuni National Park, Francisco de Orellana Province, Ecuador, July.

Graham Eaton / Salmon / Trout fish (Salmo sp) jumping a waterfall on the Afon Lledr, Betws Y Coed, Wales, October

Denis-Huot,Denis-Huot / Lesser flamingo (Phoeniconaias minor) aerial view of flock and geyser, Bogoria Game Reserve, Kenya

Enrique Lopez-Tapia,Enrique Lopez-Tapia / Peatland landscape in the mist, Tierra del Fuego, Argentina

Alex Mustard,Alex Mustard / Rainbow trout (Oncorhynchus mykiss) under trees, Capernwray Lake, Lake District, England, UK.

Daniel Heuclin / Malayan Tiger (Panthera tigris jacksoni) in river, Malaysia. Captive in natural setting.

Franco Banfi / Piraputanga (Brycon hilarii) reflecting on the water surface, Aquirio Natural, Bonito, Mato Grosso do Sul, Brazil

Eric Baccega,Eric Baccega / Female Grizzly bear (Ursus arctos horribilis) standing up in alert and looking around, while feeding on sedge, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Yukihiro Fukuda,Yukihiro Fukuda / Japanese fireflies (Luciola cruciata) in flight at night, Japan endemic species, Hino-River, Nichinan-chou, Tottori, Japan, July

Denis-Huot,Denis-Huot / Grizzly bears (Ursus arctos horribilis) looking for salmon, Brooks river, Katmai national park, Alaska, North America,

Erlend Haarberg,Erlend Haarberg / Aerial view down river to the east of the Hofsjakull glacier and west of the Sprengisandur upland desert. Innumerable rivulets flow from beneath the glacier in this area of tundra which abounds in pon...

Denis-Huot / Herd of Angolan giraffes (Giraffa camelopardalis angolensis) and Burchell's zebras (Equus quagga) aerial view, Okavango delta, Bostwana

Anup Shah / Forest buffalo (Syncerus caffer nanus) standing and urinating in a river running through Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. December 2011.

Yukihiro Fukuda / Japanese giant salamander (Andrias japonicus) moving upstream to spawn, Japan, August

Nick Garbutt / Gulik Falls, edge of southern plateau, Maliau Basin, Sabah's 'Lost World', Borneo (digitally stitched image)

Linda Pitkin / 2020VISION / Common Toad (Bufo bufo) seen from below against a blue sky. Surrey, England, March. Did you know? It used to be believed that toads had a magical stone in their head; however 'toadstones' which have...

Laurie Campbell / Brown trout (Salmo trutta) resting on river bed near the Aigas Field Studies Centre, Inverness-shire, Scotland, July

Graham Eaton / Underwater view of a mountain lake, Llyn Idwal, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / Underwater view of a mountain lake with frozen surface, Llyn Idwal, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / Split level shot of Llyn Idwal and Cwm Idwal, showing freshwater habitat with Green lacustrine algae (Chlorophyceae sp.), Snowdonia NP, Gwynedd, Wales, UK, August

Todd Mintz / Sockeye salmon (Oncorhynchus nerka) split level view of salmon on river bed, annual spawning run, Adams River, British Columbia, Canada, October

Todd Mintz / Sockeye salmon (Oncorhynchus nerka) split level view of annual spawning run, Adams River, British Columbia, Canada, October

Pete Oxford / Bald cypress trees (Taxodium distichum) The Orianne Indigo Snake Preserve, Telfair County, Georgia, USA

Andy Rouse / 2020VISION / European river otter (Lutra lutra) in habitat, UK, controlled conditions, November

Kim Taylor / Brown Trout (Salmo trutta) juvenile jumping through the water surface to take a hoverfly. Surrey, UK.

Terry Whittaker / 2020VISION / Waterlilies flowering, Wicken Fen, Cambridgeshire, UK, June 2011

Graham Eaton / A shoal of Minnows (Phoxinus phoxinus) in a quiet tributary of the River Glaslyn. Porthmadog, Wales, July.

Graham Eaton / Under the ice scene of freshwater frozen lake. Llyn Dinas, Snowdonia, Wales, December 2010.

Linda Pitkin / 2020VISION / Brown Trout (Salmo trutta) in disused quarry, Jackdaw Quarry, Capernwray, Carnforth, Lancashire, UK, August

Graham Eaton / Split level image of Cwm Idwal and Llyn Idwal showing lake and mountain habitat and lacustrine algae, Snowdonia NP, North Wales, UK, January 2010. Winner of the Living Landscape: Connectivity categor...

Fabio Liverani / Freshwater Crab (Potamon fluviatile) in a shallow stream - split perspective showing crab beneath and fluvial habitat. Foreste Casentinesi National Park, Italy, July.

Fabio Liverani / Freshwater Crab (Potamon fluviatile) brandishing claws in defensive posture. Foreste Casentinesi National Park, Italy, July.

Fabio Liverani / Freshwater Crab (Potamon fluviatile) in a shallow stream - split perspective showing crab beneath and fluvial habitat. Foreste Casentinesi National Park, Italy, July.

Fabio Liverani / Freshwater Crab (Potamon fluviatile) in a shallow stream - split perspective of underwater and habitat. Foreste Casentinesi National Park, Italy, July.

Jouan & Rius / Stream running through rainforest, Bako NP, Borneo, Sarawak, Malaysia

Alex Mustard / Two Florida manatee (Trichechus manatus latirostrus) surfacing to breathe, in morning light. Three Sisters Spring, Crystal River, Florida. USA. January

Fabio Liverani / Crested Newt (Triturus cristatus carnifex) split level view of female swimming near surface, Traversari lake, Campigna National Park, Emilia Romagna and Tuscany regions, Italy

Fabio Liverani / Crested Newt (Triturus cristatus carnifex) underwater view of female swimming on surface, Traversari lake, Campigna National Park, Emilia Romagna and Tuscany regions, Italy

John Waters / Freshwater lake formed after commercial peat extraction finished in the 1960's. Now a venue for carp fishing but also an important wetland habitat within the Somerset Levels. Near Westhay, Somerset, E...

Pete Oxford / Cane Toad (Bufo marinus) on riverbank, Essequibo River, Iwokrama Rainforest Reserve, Guyana

Andy Rouse / Dipper (Cinclus cinclus) portrait, standing on exposed stone, in fast flowing freshwater river, Brecon Beacons National Park, Wales, UK

Michel Roggo / Carp (Cyprinus carpio) Aare river, Switzerland, 2004

Michel Roggo / Pike (Esox lucius) hiding under aquatic vegetation, Doubs River, France, 2001

Michel Roggo / Carp (Cyprinus carpio) Aare River, Switzerland 2006

Stephen Dalton / Marsh frog (Rana ridibunda) leaping over water, another in water, controlled conditions, from Europe

Michel Loup / Looking up at Pike (Esox lucius) hiding under water lily leaves, Jura mountain lake, France. Veolia Environnement Wildlife Photographer of the Year 2009 - Highly commended in the 'Animals in their Env...

Doug Perrine / Morelet's / Mexican crocodile (Crocodylus moreletii) viewed from below in freshwater habitat. Near Tulum, Yucatan Peninsula, Mexico. Endangered

Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) trying to catch salmon in river, Alaska