Danny Green / Hazel Dormouse (Muscardinus avellanarius) hibernating amongst leaves and acorns. Captive. Leicestershire, UK, October.
Danny Green / Mountain hare (Lepus timidus) resting Cairngorms, Scotland, March
Alex Mustard / RF - Pod of Spinner dolphins (Stenella longirostris) cruise in formation over the sand of a lagoon while sleeping. Egypt. Red Sea (This image may be licensed either as rights managed or royalty free.)
Erlend Haarberg / Red fox (Vulpes vulpes), on spring snow, Vauldalen, Norway, April.
Nick Garbutt / King penguin (Aptenodytes patagonicus), two sleeping on snow. Grytviken, South Georgia. March.
Danny Green / Ringed seal (Pusa hispida) resting on ice, reflected in water. Svalbard, Norway. July.
Danny Green / Reindeer (Rangifer tarandus) hunkering down in snow during blizzard. Svalbard, Norway, April.
Danny Green / Polar bear (Ursus maritimus) sleeping in snow. Churchill, Manitoba, Canada, November.
Danny Green / Polar bear (Ursus maritimus) female resting with cubs on glacier. Svalbard, Norway, July.
Danny Green / Polar bear (Ursus maritimus) and cubs resting on sea ice. Svalbard, Norway, July.
Danny Green / Polar bear (Ursus maritimus) resting in snow. Svalbard, Norway, July.
Alex Mustard / Green turtle (Chelonia mydas) resting on sea floor and two juvenile Golden trevally (Gnathanodon speciosus). Marsa El Shouna, Marsa Alam, Egypt.
Neil Anderson / Red squirrel (Sciurus vulgaris), two curled up asleep in drey inside nest box. Nest of lichen and Pine needles. Highlands, Scotland, UK.
Clay Bolt / Blue-banded bee (Amegilla sp) males sleeping on stem. Halmahera, North Maluku, Indonesia.
Alex Mustard / Common seahorse (Hippocampus kuda) female wrapping her prehensile tail around piece of wood on the seabed. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.
SCOTLAND: The Big Picture / Grey seal (Halichoerus grypus) pup on a breeding beach, Orkney, Scotland, UK, April.
SCOTLAND: The Big Picture / Grey seal (Halichoerus grypus) huge group hauled out on a beach, Island of Mingulay, west coast of Scotland. May.
Ross Hoddinott / Chalkhill blue butterfly (Polyommatus coridon) Hatch Hill, Somerset, UK. August.
Matthew Maran / Red fox (Vulpes Vulpes) resting curled up close up, North London, England UK
Eric Baccega / Chimpanzee female (Pan troglodytes schweinfurthii) sleeping in a nest built in a tree, Kibale National Park, Uganda, January.
Eric Baccega / Chimpanzee male (Pan troglodytes schweinfurthii) sleeping on the forest floor with feet up, Kibale National Park, Uganda. January.
Phil Savoie / White tent making bat (Ectophylla alba) roosting in Heleconia leaf, La Selva Field Station, Costa Rica.
Nick Hawkins / Galapagos sea lion (Zalophus wollebaeki), three resting underneath school bus. Isabela Island, Galapagos. 2017.
Andy Rouse / Jaguars (Panthera onca) on riverbank , Pantanal, Brazil
Andy Rouse / Jaguar (Panthera onca) resting against tree on riverbank, Pantanal, Brazil
Andy Rouse / Jaguar (Panthera onca) on riverbank , Pantanal, Brazil
Sven Zacek / Bearded seal (Erignathus barbatus) sunbathing on iceberg broken off from glacier. Kongsfjorden fjord, Spitsbergen, Norway. June 2014.
Karine Aigner / Bengal tiger (Panthera tigris tigris) head, close up. Ranthambore National Park, Rajasthan, India.
Tui De Roy / Alcedo giant tortoise (Chelonoidis vandenburghi) group resting in pool, Alcedo Volcano, Isabela Island, Galapagos
Tui De Roy / Alcedo giant tortoise (Chelonoidis vandenburghi) group resting in water at night, Alcedo Volcano, Isabela Island, Galapagos
Luke Massey / Giant otter (Pteronura brasiliensis) resting on a fallen tree in the Rio Cuiaba, Brazil
Pedro Narra / Mountain Gorilla (Goriila beringei) resting, Volcanoes National Park, Virunga Mountains, Rwanda.
Sandesh Kadur / Bamboo lemur (Hapalmur griseus) sitting on tree stump. Andasibe-Mantadia National Park, Madagascar.
Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) silverback sitting on boundary wall between Volcanoes National Park and a Potato crop, looking into valley. Area to be restored to forest. Rwanda.
Danny Green / Sea otter (Enhydra lutris) resting on sea ice, Alaska, USA, June
Danny Green / Sea otter (Enhydra lutris) resting amongst sea ice, Alaska, USA, June
Danny Green / Sea otters (Enhydra lutris) resting on ice, Alaska, USA, June
David Fleetham / Whitetip reef shark (Triaenodon obesus) resting on sea floor. Kauai, Hawaii.
Klein & Hubert / Harp seal (Pagophilus groenlandicus) pup sleeping on ice, Gulf of St. Lawrence, Canada
Klein & Hubert / Cheetahs (Acinonyx jubatus) two at sunset, South Africa. Captive.
Klein & Hubert / Red-ruffed lemur (Varecia rubra) lying on branch in tropical forest, Madagascar.
Guy Edwardes / African elephant (Loxodonta africana) with Egret (Ardeidae sp) on back wtih tourists watching from boat in background. Chobe River, Botswana. 2017.
Mary McDonald / Mountain gorilla (Gorilla beringei beringei) female with baby age, 4 months, Volcanoes National Park, Rwanda
Giri Cavale / Melanistic leopard / Black panther (Panthera pardus) on territorial patrol on track, Nagarahole National Park, Nilgiri Biosphere Reserve, Karnataka, India.
Theo Bosboom / Banded demoiselles (Calopteryx splendens) pair still clasped together after mating, with two males resting nearby, the Netherlands, July.
Theo Bosboom / Common blue damselflies (Enallagma cyathigerum) group reflected in water, flying and perching on reeds - they sit on stems and fly around the water, looking for prey and females to mate. The stems ar...
Theo Bosboom / Banded demoiselle (Calopteryx splendens) at sunrise, resting in the Common nettle, Roosendaal, the Netherlands. July.