Andrew Parkinson / 2020VISION / Golden plover Pluvialis apricaria Profile of an adult on open moorland. Shetland Islands, Scotland, UK Photographer.Andrew Parkinson

Chris Gomersall / 2020VISION / Sanderling (Calidris alba) in winter plumage feeding on tideline, The Wash, Norfolk, March. Did you know? The Sanderling is the only British wading bird that has no back toe; this gives it a distincti...

John MacPherson / 2020VISION / Bottlenose dolphin (Tursiops truncatus) surfacing, fin showing distinctive identifying marks, Moray Firth, Inverness-shire, Scotland, UK, August

Juergen Freund / Casts of 130 million year old dinosaur footprints (the original footprints are only exposed at low tide) at Gantheaume Point, with its distinctive red soils. Broome, Western Australia.

Anup Shah / Chimpanzee (Pan troglodytes) portrait of juvenile orphan, Sweetwater Sanctuary, 4 yr old, Mahesa with 'pant hoot' expression, a distinctive vocalisation, often used as a contact call (useful in forest...

Geoff Simpson / Male Adder showing distinctive zig zag markings {Vipera berus}. Peak District NP, England UK

Mark Carwardine / Grey whale (Eschrichtius robustus) close-up of tailstock showing distinctive 'knuckles', San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Grey whale (Eschrichtius robustus) close-up of tailstock showing distinctive 'knuckles', San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Aerial view of Fiordland National Park, South Island, New Zealand, showing distinctive treeline, January 2009

Mark Carwardine / Close up of hand of Aye-aye (Daubentonia madagascariensis) showing long distinctive long middle finger, Captive, Tsimbazaza Zoo, Madagascar

Mark Carwardine / Blue whale (Balaenoptera musculus) fluke print or footprint, the distinctive impression left behind after a dive, Baja California, Sea of Cortez (Gulf of California), Mexico, Endangered species

Mark Carwardine / Bowhead whale (Balaena mysticetus) surfacing, showing distinctive triangular head and arched mouthline, Igloolik, Foxe Basin, Nunavut, Arctic Canada

Mark Carwardine / Bowhead whale (Balaena mysticeus) surfacing, showing distinctive profile, Igloolik, Foxe Basin, Nunavut, Arctic Canada

Brent Stephenson / Hector's dolphins (Cephalorhynchus hectori) breaking the surface showing the distinctive patterning and rounded dorsal fins. Akaroa Harbour, Canterbury, New Zealand.

Brent Stephenson / Hector's dolphin (Cephalorhynchus hectori) breaking the surface as it breathes showing the distinctive patterning and rounded dorsal fin. Akaroa Harbour, Canterbury, New Zealand.

Bertie Gregory / 2020VISION / Young Red fox (Vulpes vulpes) investigating a remote controlled camera in urban park, Bristol, UK, February. Did you know? Red foxes have distinctive body language, and inquisitive foxes will flick t...

Brent Stephenson / Cape petrel (Daption capense) in flight showing the distinctive upperwing pattern. Kaikoura, Canterbury, New Zealand, October.

Nick Upton / Parasite fly / Tachinid fly (Prosena siberita) with distinctive long proboscis, resting on Woolly thistle leaf (Cirsium eriophorum), chalk grassland meadow, Wiltshire, UK, July.

Matthias Breiter / African Jacana (Actophilornis africanus) walking on water lily pads showing distinctive large feet, Okavango Delta, Botswana

Christian Ziegler / Leaf damaged by insect larva with a distinctive feeding pattern, Barro Colorado Island, Panama

Andrew Parkinson / Female Blackbird (Turdus merula) feeding on a distinctive, yellow variety of rowan, January, Nottinghamshire, UK

Andrew Parkinson / Male Blackbird (Turdus merula) perched in a distinctive, yellow variety of rowan, January, Nottinghamshire, UK

Linda Pitkin / 2020VISION / Brown Trout (Salmo trutta) in disused quarry, Jackdaw Quarry, Capernwray, Carnforth, Lancashire, UK, August. Photographer quote: 'Mature male brown trout have large jaws and, like salmon, sometimes de...

Bryan and Cherry Alexander / Distinctive Bautaen Mountain, ground to this sharp horn shape by glaciers. Hornsund Fjord. Spitsbergen, Svalbard, Norway, June 2008.

Bryan and Cherry Alexander / Wet Adelie penguin (Pygoscelis adeliae) with distinctive brushtail, Antarctica.

Andy Sands / Hover fly (Rhingia campestris) showing its distinctive long snout, feeding on Water Mint, West Sussex, England, July

Andrew Parkinson / Arctic Skua (Stercorarius parasiticus) banking in flight, revealing its distinctive tail shape. Shetland Islands, Scotland, UK, July. (non-ex)

Bryan and Cherry Alexander / Remains of Wellman's hut (1905) by the distinctive rocks at Cape Tegetthoff. Hall Island, Franz Josef Land, 1998.

Mark Carwardine / Sperm whale (Physeter macrocephalus) showing distinctive wrinkled skin, Sea of Cortez, Baja California, Mexico, Endangered

Sue Flood / Portrait of female Ross seal (Ommatophoca rossi) showing distinctive thick neck. Ross Sea, Antarctica. December 2009.

Sue Flood / Portrait of female Ross seal (Ommatophoca rossi) showing distinctive thick neck. Ross Sea, Antarctica. December 2009.

Sue Flood / Rare shot of female Ross seal (Ommatophoca rossi) calling, showing distinctive thick neck. Ross Sea, Antarctica. December 2009.

Gerrit Vyn / A Little Brown Bat ( Myotis lucifugus) clings to a tree on 20 degree F day outside Aeolus Cave. Despite the apparent health of this individual, it is supposed to be in deep hibernation. White-nose syn...

Gerrit Vyn / Vermont Department of Fish and Wildlife biologist Scott Darling holds dead bats found outside Vermont's Aeolus Cave. Bats are infected with White nose syndrome with causes a distinctive ring of fungal...

Gerrit Vyn / A researcher holds a dead Little Brown Myotis (Myotis lucifigus) found in the snow outside Aeolus Cave. The bats hibernating within the cave are infected with the deadly White-nose Syndrome. This dise...

Gerrit Vyn / Live and dead Little Brown Bats (Myotis lucifugus) in fected with White nose syndrome, in Aeolus Cave, the largest bat hibernacula in New England. This disease causes a distinctive ring of fungal grow...

Gerrit Vyn / Live and dead Little Brown Bats (Myotis lucifugus) in fected with White nose syndrome, in Aeolus Cave, the largest bat hibernacula in New England. This disease causes a distinctive ring of fungal grow...

Gerrit Vyn / Dead Little Brown bats (Myotis lucifugus) hang from a crevice outside the entrance to Aegolus Cave. Starving bats infected with white-nose syndrome often exit their hiberncula during winter where they...

Gerrit Vyn / The corpses of dead Little Brown Bats (Myotis lucifugus) lie on ice outside of Aegolus Cave, Starving bats infected with white-nose syndrome often exit their hiberncula during winter where they quickl...

Gerrit Vyn / Live and dead Little brown Bats (Myotis lucifugus) hang outside Vermont's Aeolus Cave, the largest bat hibernacula in New England. Starving bats infected with white-nose syndrome often exit their hib...

Gerrit Vyn / Dead Little brown Bats (Myotis lucifugus) in a crevice outside of Vermont's Aeolus Cave. Starving bats infected with the deadly White-nose syndrome often exit the hiberncula where they quickly freeze....

Gerrit Vyn / Little brown Bats (Myotis lucifugus) hibernating in Aeolus Cave. White-nose syndrome is decimating the caves' bat population, a deadly disease which causes a distinctive ring of fungal growth around t...

Gerrit Vyn / Little brown Bats (Myotis lucifugus) hibernating in Aeolus Cave. White-nose syndrome is decimating the caves bat population, a deadly disease which causes a distinctive ring of fungal growth around th...

Gerrit Vyn / Indiana Bats (Myotis sodalis) infected with white-nose syndrome, a deadly disease which causes a distinctive ring of fungal growth around the muzzles and on the wings of cave bats. Ulster County, New...

Gerrit Vyn / Indiana Bat (Myotis sodalis) large flock infected with white-nose syndrome, a deadly disease which causes a distinctive ring of fungal growth around the muzzles and on the wings of cave bats. Ulster C...

Gerrit Vyn / Indiana Bat (Myotis sodalis) large flock infected with white-nose syndrome, a deadly disease which causes a distinctive ring of fungal growth around the muzzles and on the wings of cave bats. Ulster C...

Gerrit Vyn / Indiana Bat (Myotis sodalis) infected while hibernating with white-nose syndrome, a deadly disease which causes a distinctive ring of fungal growth around the muzzles and on the wings of cave bats. U...

Gerrit Vyn / Eastern Pipistrelle (Pipistrellus subflavus) infected with white-nose syndrome, a deadly disease which causes a distinctive ring of fungal growth around the muzzles and on the wings of cave bats. Ulst...

Sue Flood / Himba girl with two distinctive plaits, Kaokoland, Namibia, August 2007

Sue Flood / Woman with distinctive headdress, a member of the Himba tribe, Kaokoland, Namibia, August 2007

Matthew Maran / Californian sealion (Zalophus californianus) portrait, showing distinctive bump on the head of males. The bump appears after 5 years and the crest gets lighter with age. Clayoquot Sound, Vancouver Isl...

Sue Flood / Young Himba children in Kaokoland, Namibia. Himba girls are identified by two distinctive plaits, whilst Boys have a "Mohican".

Sue Flood / Two women of the Himba tribe, Kaokoland, wearing distinctive headdress and clothing, with children strapped to their backs. Namibia

Sue Flood / Woman of the Himba tribe, Kaokoland, wearing distinctive headdress and clothing. Namibia 2007

Sue Flood / Woman of the Himba tribe, Kaokoland, wearing distinctive headdress and clothing. Namibia 2007

Sue Flood / Woman of the Himba tribe, Kaokoland, wearing distinctive headdress and clothing, smoking a pipe outside a traditional mud and dung hut. Namibia 2007

Juergen Freund / Bungle Bungle Range, Purnululu National Park, Western Australia. The distinctive beehive-shaped towers are made up of sandstones and conglomerates deposited into the Ord Basin 375 -350 million years a...

Juergen Freund / Moonrise over Gantheaume Point, with its distinctive red soils known as 'pindan'. Broome, Western Australia

Juergen Freund / Gantheaume Point, with its distinctive red soils known as 'pindan'. Broome, Western Australia

Bruno D'Amicis / Apennines / Abruzzo chamois (Rupicapra pyrenaica ornata) yearling showing the distinctive winter coat pattern. Endangered, endemic. Abruzzo national Park, Italy.

Bruno D'Amicis / Apennines / Abruzzo chamois (Rupicapra pyrenaica ornata) adult female showing the distinctive winter coat pattern. Endangered, endemic, Abruzzo national Park, Italy.

Bruno D'Amicis / Italian dormouse / Hazelmouse (Muscardinus avellanarius speciosus) on tree, showing distinctive head pattern of this Italian endemic subspecies. Lazio, Italy

Bruno D'Amicis / Meadow / Orsinii's viper (Vipera ursinii) adult female, showing distinctive dorsal pattern. Endangered species. Abruzzo, Italy.

Barry Bland / Brown Pelican {Pelecanus occidentalis} with beak raised, displaying distinctive pouch / gullet, Florida, USA

Nick Garbutt / High mountain forest (c.3000m) and rugged rocky summit beyond, with distinctive 'Donkey's Ears' visible, Mt Kinabalu, Sabah, Borneo, Malaysia.

Solvin Zankl / Rockhopper penguin {Eudyptes chrysocome} following path up steep section of rock, towards breeding colony. Note distinctive claw marks scratched onto the rocks as a result of millions of journeys made...

Mark Moffett / Embera Choco people use a distinctive kind of blowgun and secretion from Golden Poison Dart Frog (Phyllobates terribilis) to poison on their darts for hunting, Colombia

Norbert Wu / Euphyllia Coral (Euphyllia ancora) a type of stony coral with distinctive polyps, Papua New Guinea

Constantinos Petrinos / Sailfin waspfish {Paracentropogon sp} Sulawesi, NB distinctive dorsal fin

Bryan and Cherry Alexander / Remains of Wellman's hut (1905) by the distinctive rocks at Cape Tegetthoff. Hall Island, Franz Josef Land, Russia, 1998.