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

Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) catching fish, Lofoten, Norway, August.

Ismaele Tortella / Tracking shot of a Whooper swan (Cygnus cygnus) family walking, Lofoten, northern Norway, August.

Morley Read / Clown treefrog (Dendropsophus reticulatus) opening its eyes, Amazon rainforest, Orellana Province, Ecuador.

Morley Read / Slow motion clip of a Mute swan (Cygnus olor) with three cygnets, Cornwall, England, UK, May.

Morley Read / Slow motion clip of a group of male Mallards (Anas platyrhynchos) competing violently to mate with a single female, Cornwall, England, UK, May 2018.

Diane McAllister / Polar bears (Ursus maritimus) fighting in water. Beaufort Sea , Kaktovik Alaska. USA. Highly commended in the Polar Passion category of the Nature's Best Photography Competition 2019.

Sven Zacek / Aerial view of a small forest lake in Karula National Park, Valgamaa county, Southern Estonia. Highly commended in the Wildlife Photographer of the Year Awards 2019.

Morley Read / Aerial shot tracking over a cattle farm cut out of the Amazon rainforest, the farm has fish ponds for raising Tilapia and is surrounded by primary rainforest, Napo Province, Ecuador, 2017.

Alex Mustard / Yellowtail tang (Zebrasoma xanthurum) male and female turn belly to belly during spawning to ensure fertilization. Temple, Ras Umm Sid, Sharm El Sheikh, Sinai, Egypt. Red Sea. This action is very fast...

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.

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.

Claudio Contreras / Californian sea lion (Zalophus californianus) swimming in Southern sea palm (Eisenia arborea) and Giant Kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphe...

Michel Roggo / Watermilfoil (Myriophyllum spicatum) with some stems supporting clusters of Zebra mussel (Dreissena polymorpha) Lake Neuchatel, Switzerland. Highly commended in the Plants category of the Wildlife Pho...

Juergen & Christine Sohns / African Lion (Panthera leo) male drinking at waterhole, Tswalu Game Reserve, South Africa

Sergio Hanquet / Arrow crab (Sternorhynchus lanceolatus). Tenerife, Canary Islands.

Sergio Hanquet / Green sea turtle (Chelonia mydas), two viewed from above. Tenerife, Canary Islands.

Danny Green / Polar bear (Ursus maritimus) walking across sea ice, reflected in water. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) and cubs, standing on sea ice. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) and cubs resting on sea ice. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) female and cubs, one cub walking up slope of ice in foreground. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) and cubs feeding on Whale carcass, on iceberg. Svalbard, Norway, July 2018.

Danny Green / Polar bear (Ursus maritimus) resting on sea ice, view from above. Svalbard, Norway, June 2018.

Danny Green / Polar bear (Ursus maritimus), two cubs playing, leaping across sea ice, reflected in water. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus), two cubs walking on sea ice. Svalbard, Norway, July.

Danny Green / Ringed seal (Pusa hispida) resting on ice, reflected in water. Svalbard, Norway. July.

Daniel Heuclin / Llama (Lama glama) herd, Laguna colorada. Altiplano, Bolivia.

Nick Garbutt / Black-browed albatross (Thalassarche melanophris) flying over South Atlantic. Cooper Bay, South Georgia. November.

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

Tony Wu / Bowhead whale (Balaena mysticetus), group socialising in shallow water, aerial view. Part of larger group of more than 50 whales congregating, Sea of Okhotsk sub-population, Russia.

Tony Wu / Humphead parrotfish (Bolbometopon muricatum) shoal spawning in early morning, part of mass aggregation of thousands of fish. Caroline Islands, Palau.

Oliver Wright / Four-spotted chaser (Libellula quadrimaculata) resting on stem, covered in early morning dew. Skipwith Common National Nature Reserve, North Yorkshire, England, UK. May. Focus stacked image.

Alex Mustard / Southern stingray (Dasyatis americana) two swimming over sand bar, under stormy sky. Grand Cayman, Cayman Islands. British West Indies.

Sergio Hanquet / Loggerhead turtle (Caretta caretta) tangled in fishing net. Tenerife, Canary Islands. 2019.

Alex Mustard / Yellow tube sponge (Aplysina fistularis) on coral reef, diver exploring in background. Black Rock Drop Off, East End, Grand Cayman, Cayman Islands, British West Indies. Model released.

Alex Mustard / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) swimming over Seagrass (Halophila stipulacea) meadow. Marsa Nabaa, Marsa Alam, Egypt.

Alex Mustard / Green turtle (Chelonia mydas) feeding on Seagrass (Halophila stipulacea), blowing sand out of nostrils, on sea floor. Marsa El Shouna, Marsa Alam, Egypt.

Alex Mustard / Green turtle (Chelonia mydas) resting on sea floor and two juvenile Golden trevally (Gnathanodon speciosus). Marsa El Shouna, Marsa Alam, Egypt.

Alex Mustard / Spinner dolphin (Stenella longirostris) pod socialising close to surface. Fury Shoal, Sataya Reef, Marsa Alam, Egypt.

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) swimming close to surface. Brothers Islands, Egypt.

Oscar Dewhurst / Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April.

Oscar Dewhurst / Mute swan (Cygnus olor) swimming with cygnets in misty lake in morning light. Richmond Park, London, England, UK. May.

Shane Gross / Flying fish (Exocoetidae) in Sargasso Sea, Atlantic Ocean.

Guy Edwardes / Milky Way above Durdle Door rock arch. Jurasic Coast, Dorset, England, UK. August 2019. Composite image.

Guy Edwardes / Aurora borealis above sea stacks, Reykjanes Peninsula, Iceland. 2019.

Guy Edwardes / Dalmatian pelican (Pelecanus crispus), portrait. Lake Kerkini, Sintik, Greece. January.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female with suckling calf. Vava'u Islands, Tonga.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) male calf playing at ocean surface after coming up to breathe. Vava'u Islands, Tonga.

Tony Wu / Sperm whale (Physeter macrocephalus), ten swimming together in gathering of more than 50 individuals. Whales with flatulence and defecating. Sri Lanka.

Ingo Arndt / Sun rising over ice formations on Lake Baikal. Siberia, Russia. February 2019.

Shane Gross / Caribbean reef shark (Carcharhinus perezi), two from below, one close up. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016.

Theo Bosboom / Rocks and sea stacks in the surf at Playa del Silencio in Asturias on the Northwest coast of Spain. May 2015

Doug Gimesy / Little penguin (Eudyptula minor) on rocks of St Kilda breakwater, Melbourne city lights in background. Victoria, Australia. January 2017.

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.

Theo Bosboom / Aerial of patterns of receding waves, Playa del Silencio, Asturias, Spain. April 2018

Theo Bosboom / Crashing waves at large basalt wall, Arnarstapi, Snaefellsnes, Iceland. May 2013

Theo Bosboom / Common limpets (Patella vulgata) hit by a big wave from the Atlantic ocean at the coast of Crohy head, Donegal, Ireland. November 2017

Theo Bosboom / Sea stacks consisting of flysch rock battered by the incoming tide, playa de Gueirua, Asturias, Northwest Spain. October 2015

Theo Bosboom / Winter landscape at Luskentyre beach, Isle of Lewis, Scotland, North Harris in the background. February 2018.

Theo Bosboom / Powerful waves rolling in at the Atlantic coast of Iceland near Dyrholey during a powerful winter storm. February 2016

Theo Bosboom / Sun rays through stormy clouds, and snow covered beach, Varanger Peninsula, Norway. March.

Theo Bosboom / Wave breaking in front of the two famous sea stacks Risin and Kellingin on the Faroe Islands. March 2018.

Theo Bosboom / Sand patterns at sunrise, Praia da Adraga, Sintra, Portugal. December 2016

Theo Bosboom / Blue hour before sunrise at the dunes of Seilebost beach, Lewis and Harris, Scotland. February 2018.

Theo Bosboom / Patterns on Carrickfinn beach with sand and water mixed with tannin dyed water from peat stream. Donegal, Ireland, November.

Theo Bosboom / Winter sunsrise at Seilebost beach, Isle of Harris, Scotland. February 2018

Theo Bosboom / Patterns of algae on a limestone rock with sand, White sands beach, Causeway coast, Northern Ireland. April 2016.

Theo Bosboom / Star shaped sand pattern as photographed at low tide at Luskentyre beach, Lewis and Harris, Scotland, UK, October.

Theo Bosboom / Sand patterns created by receding waves, Quiberon, Brittany, France. August 2017

Bence Mate / Dying Common frogs (Rana temporaria) with their legs removed for food, left to die in their breeding pool surrounded by frogspawn. Covasna, Romania. Highly commended in the Wildlife Photojournalism Ca...

Staffan Widstrand / RF - Pied kingfisher (Ceryle rudis) group of three perched on branch, squabbling, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Staffan Widstrand / RF - African bush elephant, (Loxodonta africana) at night, reflected in waterhole, South Africa

Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) perched on wooden bar overlooking oxbow lake. Manu National Park, Madre de Dios, Peru. September

Pascal Kobeh / False clown anemonefish (Amphiprion ocellaris) in a magnificent sea anemone (Heteractis magnifica), Sulu sea, Philippines

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.

Andy Rouse / Bengal Tiger (Panthera tigris) family drinking from pool, Ranthambhore, India

Doug Perrine / Dugong or Sea cow (Dugong dugon) split level view, Calauit Island, off Busuanga, Calamian Islands, Palawan, Philippines.

Jordi Chias / Chinstrap penguin (Pygoscelis antarcticus) carcass after leopard seal attack, Antarctic Peninsula, Antarctica.

Jordi Chias / Humped rockcod (Gobionotothen gibberiformis), Antarctic Peninsula, Antarctica.

Jordi Chias / Wandering albatross (Diomedea exulans) flying on the open ocean, Drake passage, Antarctic Peninsula, Antarctica.

Jordi Chias / Black rockcod (Notothenia coriiceps), Antarctic Peninsula, Antarctica.

Jordi Chias / Jellyfish (Diplulmaris antarctica) Cuverville, Antarctic Peninsula, Antarctica.

Jordi Chias / Jellyfish (Diplulmaris antarctica) Cuverville, Antarctic Peninsula, Antarctica.

Jordi Chias / Humpback whale (Megaptera novaeangliae), Antarctic Peninsula, Antarctica.

Jordi Chias / Crocodile icefish or White-blooded fish (Channichthyidae), Antarctic Peninsula, Antarctica.

Jordi Chias / Crabeater seals (Lobodon carcinophaga) resting on ice floating ice sheet, Antarctic Peninsula, Antarctica.

Jordi Chias / Rock cod (Notothenia) Antarctic Peninsula, Antarctica.

Jordi Chias / Primnoella soft coral, Antarctic Peninsula, Antarctica.

Jordi Chias / Sponge (Mycale acerata) with diver. Lermaire strait, Antarctic Peninsula, Antarctica.

Jordi Chias / Black rockcod (Notothenia coriiceps), Antarctic Peninsula, Antarctica.

Jordi Chias / Antarctic fur seal (Arctocephalus gazella), Antarctic Peninsula, Antarctica.

Jordi Chias / Antarctic fur seal (Arctocephalus gazella), Antarctic Peninsula, Antarctica.

Jordi Chias / Crabeater seals (Lobodon carcinophaga), Antarctic Peninsula, Antarctica.