Markus Varesvuo / Robin (Erithacus rubecula) carrying a red berry in its beak as it takes off, Parainen Uto, Finland. October.

Joel Sartore / Photo Ark / A black phase critically endangered Indochinese leopard (Panthera pardus delacouri) snarling, Zoo Taiping, Malaysia. Captive.

Ross Hoddinott / Common blue butterfly (Polyommatus icarus) resting on Devil's bit scabious (Succisa pratensis). Devon, England, UK. August.

Guy Edwardes / Amethyst deceiver fungus (Laccaria amethystina) amongst moss. New Forest National Park, England, UK. October.

Guy Edwardes / Bonnet mycena fungus (Mycena galericulata) and Holly (Ilex aquifolium) seedling, New Forest National Park, England, UK. October.

Guy Edwardes / Magpie inkcap fungus (Coprinopsis picacea). New Forest National Park, England, UK. October.

Guy Edwardes / Slime mould (Arcyria denudata) sporangia. New Forest National Park, England, UK. November. Focus stacked image.

Guy Edwardes / Parrot waxcap fungus (Gliophorus psittacinus), close up of gills, Duncliffe Wood Woodland Trust Reserve, Dorset, England, UK. November.

Guy Edwardes / Amethyst deceiver fungus (Laccaria amethystina). New Forest National Park, England, UK. October.

Andy Murch / Spiny dogfish (Squalus acanthias) portrait. Rhode Island, New England, USA. August.

Andy Murch / Smooth hammerhead shark (Sphyrna zygaena). Cabo San Lucas, Baja California Sur, Mexico.

Andy Murch / Little gulper shark (Centrophorus uyato). Cape Eleuthera, Bahamas.

Erlend Haarberg / White wagtail (Motacilla alba) reflected in water. Pasvik, Norway. May.

Edwin Giesbers / RF - Cockchafer beetle (Melolontha melolontha). France. May. (This image may be licensed either as rights managed or royalty free.)

Pal Hermansen / Wild reindeer (Rangifer tarandus) male silhouetted at dawn. Forollhogna National Park, Innlandet, Norway.

Guy Edwardes / Blue tit (Cyanistes caeruleus) in flight. Slovenia. February.

Guy Edwardes / Waxwing (Bombycilla garrulus) feeding on berries, perched on branch. Finland. February.

Danny Green / Arctic fox (Vulpes lagopus) blue morph, portrait in snow. Hornstrandir Nature Reserve, Iceland, March.

Eric Baccega / Mountain gorilla (Gorilla beringei beringei) silverback male, portrait, member of the Nyakagezi group, Mgahinga National Park, Uganda.

Guy Edwardes / Orange nectar bat (Lonchophylla robusta) feeding on a banana flower, lowland rainforest, Costa Rica. November.

Guy Edwardes / Two Pallas's long-tongued bats (Glossophaga soricina) feeding from banana flower, lowland rainforest, Costa Rica. November.

Guy Edwardes / Orange Nectar Bat (Lonchophylla robusta), lowland rainforest, Costa Rica. November.

Guy Edwardes / Pallas's long-tongued Bat (Glossophaga soricina) feeding from Flowering banana (Musa ornata), Lowland rainforest, Costa Rica. November.

Guy Edwardes / Pallas's long-tongued Bat (Glossophaga soricina) feeding from Calabash gourd flower (Crescentia cujete) , lowland rainforest, Costa Rica. November.

Guy Edwardes / Pallas's long-tongued bats (Glossophaga soricina) feeding from banana flower, lowland rainforest, Costa Rica. November.

Guy Edwardes / Pallas's long-tongued bats (Glossophaga soricina) feeding from banana flower, lowland rainforest, Costa Rica. November.

Guy Edwardes / Pallas's long-tongued Bat (Glossophaga soricina) feeding on Clock vine (Thunbergia mysorensis), lowland rainforest, Costa Rica. November.

Guy Edwardes / Orange nectar bat (Lonchophylla robusta) feeding on Little clamshell orchid (Prosthechea cochleata), lowland rainforest, Costa Rica. November.

Shane Gross / Jellyfish, probably a purple stinger (Pelagia noctiluca) at night in the Sargasso Sea, Atlantic Ocean.

Andres M. Dominguez / Western yellow wagtail (Motacilla flava) perched on thistle, Andalusia. Spain. April

Andres M. Dominguez / Black guillemot (Cepphus grylle) adult in flight. Batsfjord. Norway. March

Andres M. Dominguez / Adult male King Eider (Somateria spectabilis) in flight. Batsfjord, Norway, March.

Andres M. Dominguez / Green woodpecker (Picus viridis) on lichen-covered branch, Sierra de Grazalema Natural Park, Southern Spain. July

Nick Hawkins / Silky shark (Carcharhinus falciformis). Cocos Island National Park, Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp), three nectaring on flower. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) flying towards Banana (Musa sp) flower to feed. Costa Rica.

Clay Bolt / Composite image of Wallace's giant bee (Megachile pluto) with European honey bee (Apis melifera). This is the world's largest bee, which is approximately 4 times larger than a European honey bee. One...

Tui De Roy / Nazca booby (Sula granti) in flight at dusk. Punta Suarez, Espanola Island, Galapagos.

Alex Mustard / Tiger cardinalfish (Cheilodipterus macrodon) male mouth brooding a clutch of eggs behind his sharp teeth. Gubal Island, Egypt. Strait Of Gubal, Red Sea.

Jack Dykinga / Burrowing owl (Athene cunicularia) at sunset, standing on one leg, Marana, Sonoran Desert, Arizona, USA. October.

Tony Wu / Blue whale (Balaenoptera musculus indica) in Indian Ocean, Mirissa, Matara, Sri Lanka.

Tony Wu / Asian sheepshead wrasse (Semicossyphus reticulatus), male in white breeding colouration. Niigata Prefecture, Honshu, Japan. June.

Alex Mustard / Hawksbill turtle (Eretmochelys imbricata) pair circling each other above coral reef. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Seth Patterson / A compilation of items found washed up along a half mile stretch of the high tide line of South Padre Island, Texas. October 2016. Some of the plastic bottles and bags of signs of nip marks from hun...

Lucas Bustamante / Coastal glassfrog (Cochranella litoralis) on leaf with eggs. San Lorenzo, Esmeraldas, Ecuador.

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) seen from below, La Selva Biological Research Station, Costa Rica

Ingo Arndt / Honey Bee (Apis mellifera) queen, drone, and worker, Germany

Piotr Naskrecki / Longhorn Beetle (Tithoes confinis) on hand, Gorongosa National Park, Mozambique