Nick Garbutt / Aggregation / bloom / swarm of Moon Jellyfish (Aurelia aurita) in the clear waters of Loch Na Keal, off the Isle of Mull, north west Scotland, UK, June, Photographed through the surface.

Edwin Giesbers / Saltwater crocodile (Crocodylus porosus) close up portrait, Sarawak, Borneo, Malaysia

Morley Read / Slow motion clip of a Forest whiptail lizard (Kentropyx pelviceps) blinking its eye, showing nictitating membrane crossing the eye, Amazon rainforest, Orellana Province, Ecuador. (non-ex)

Chase Dekker / African Lion (Panthera leo) male, Masai Mara, Kenya

Heike Odermatt / Walrus (Odobenus rosmarus), Hinlopen Strait, Svalbard, Norway

Danny Green / Polar bear (Ursus maritimus) licking paw, close-up. Svalbard, Norway, April.

Andy Rouse / Bengal tiger (Panthera tigris) male, sub-adult aged three years, face portrait. Ranthambhore National Park, India.

Gary Bell/ Oceanwide / Sea Anemone (Corynactis australis) group, Bicheno, Tasmania, Australia

Suzi Eszterhas / Leopard (Panthera pardus) fur, Jao Reserve, Botswana

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony, males huddling whilst incubating eggs. Atka Bay, Antarctica. July.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) forming breeding colony at start of winter. Atka Bay, Antarctica. April.

Karine Aigner / Bengal tiger (Panthera tigris tigris) head, close up. Ranthambore National Park, Rajasthan, India.