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...

Bence Mate / Leafcutter ants (Atta sp) colony harvesting a banana leaf, Costa Rica. 3rd place in the Insects and Spiders category of the Terre Sauvage Nature Images Awards competitions 2015.

Andy Rouse / Bengal tiger (Panthera tigris tigris) with tourists watching from cars, Ranthambore, India

Ingo Arndt / European Beaver (Castor fiber) fresh bite marks and felled trees, Spessart, Germany

Nick Upton / Eurasian beaver (Castor fiber) gnawing the trunk of a Willow tree (Salix sp.) in woodland enclosure at night. Devon Beaver Project, run by Devon Wildlife Trust, Devon, UK, April. Taken by a remote cam...

Graham Eaton,Graham Eaton / Highland cow next to road above Malham, Yorkshire, winter.

Sven Zacek / Trees that have been gnawed by Beavers (Castor fiber) Southern Estonia, October.

Jabruson / 'Patasse' - a male member of the Ba'Aka ethnic group from the village of Mossapoula, a tribe that have lived around Dzanga Ndoki National park for thousands of years and still depend on forest resourc...

David Maitland / Close-up view of the upward-looking giant dorsal compound eyes of the St Marks fly (Bibio marci) used to detect female flies flying above. Like many insects the eyes are "hairy". Feltwell, Norfolk, UK...

David Maitland / Close-up view of the upward-looking giant dorsal compound eyes of the St Marks fly (Bibio marci) used to detect female flies flying above. Like many insects the eyes are "hairy". Feltwell, Norfolk, UK...

David Maitland / Head of female St. Marks fly (Bibio marci) showing normal sized compound eyes. Feltwell, Norfolk, UK

David Maitland / Head of female St. Marks fly (Bibio marci) showing normal sized compound eyes. Feltwell, Norfolk, UK

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

Eric Dragesco / A male Markhor (Capra falconeri) traversing a rock face, following hoof marks cut into the cliff. Tajikistan, Central Asia, November.

Jack Dykinga / Desert varnish coloured canyon walls in Navajo sandstone cliffs showing drip marks across cliff face, Colorado Plateau, Arizona, USA

Jack Dykinga / Concretion balls lining fracture lines in petrified sand dune formation, with lichen scaring calcification marks, Colorado Plateau, Arizona, USA

Andrew Parkinson / Bengal tiger (Panthera tigris tigris) an adult female sniffing for scent marks. Bandhavgarh National Park, Madhya Pradesh, India.

Igor Shpilenok / Male Kamchatka Brown bear (Ursus arctos beringianus) marks trunk of Stone birch to denote territory during mating season, Valley of the Geysers, Kronotsky Zapovednik Reserve, Kamchatka, Russia.

Charlie Summers / American badger (Taxidea taxus) rolling on the side of the mound that marks the entrance to its burrow. North Park, Colorado, USA, June.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female with calf swimming above head. Rake marks on fluke created by Orca or False Killer whale predators. Vava'u Islands, Tonga.

Heather Angel / Broomrape (Pedicularis longiflora) in wet meadow amongst Horsetail (Equisetum sp). Maroon marks on flowers act as Nectar guides. Road from Barkham to Ruo Er Gai, Sichuan Province, China. July.

Heather Angel / Bumblebee scarab beetles (Pygopleurus humeralis) feeding on Phelypaea flower (Phelypaea coccinea). Flower has marks that mimic beetle elytra wings to attract pollinators. Plant parasitic on Tanacetum...

Heather Angel / Blue tit (Cyanistes caeruleus) nectaring on Camellia 'St Ewe' (Camellia x williamsii) in garden, Claw marks from gripping bird visible on adjacent flower. Surrey, England, UK. February.

Heather Angel / Garden bumblebee (Bombus hortorum) on Foxglove (Digitalis purpurea), spatter marks guiding bee to nectar. In garden, Surrey, England, UK. July.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

Franco Banfi / Scuba diver on the 'CAVERN LIMITS Stop' sign marks the limit of the cavern zone and should not be passed. Gran Cenote, near Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Stefan Christmann / Nilas, a thin sheet of ice created as the sea ice starts to form, in evening light. Scratch marks visible where sheet has moved on top of adjacent sheet. Atka Bay, Antarctica. March.

Bruno D'Amicis / Marsican / Apennine brown bear (Ursus arctos marsicanus) claw marks on Beech (Fagus sylvatica) tree bark in old growth beech forest. Abruzzo, Lazio and Molise National Park / Parco Nazionale d'Abr...

Ashley Cooper / The Mesquite flat sand dunes in Death Valley. Death Valley is the lowest, hottest, driest place in the USA, with an average annual rainfall of around 2 inches, some years it does not receive any rain...

Ashley Cooper / The Brough of Birsay lighthouse marks Orkney mainland's most north westerly tip. It was built in 1925 and converted to solar power in 2002. A bank of 36 solar panels charges an array of batteries that...

Ashley Cooper / Speed kills bears sign in Yosemite National Park, each sign marks a spot where a bear has been killed by traffic, California, USA. October 2014

Graham Eaton / Ripple marks in a bedding plane of Carboniferous age Sandstone, near Bude, Cornwall, UK, March. The ripple marks show that the sandstones were deposited in water.

Graham Eaton / Sole marks on the underside of a bed of Carboniferous age, turbidite sandstone. Bude, Cornwall, UK, may. Sole marks are formed by flowing water or currents and can indicate the flow direction when the...

David Fleetham / Californian sealions (Zalophus californianus) on a cardinal marker off Long Beach, California, USA.

Matthew Maran / Oak tree (Quercus robur) with Grey squirrel (Sciurus carolinensis) damage, Devon, England, UK, July.

Matthew Maran / Goat willow (Salix caprea) felled by a Eurasian beaver (Castor fiber) with teeth marks The riverside tree will resprout with new shoots supplying a source of food for the beavers for years to come. De...

Matthew Maran / Goat willow (Salix caprea) felled by a Eurasian beaver (Castor fiber). The riverside tree will resprout with new shoots supplying a source of food for the beavers for years to come. Devon, England, UK...

John Cancalosi / Tusk marks made by elephants seeking minerals Kitum cave, Mount Elgon National Park, Kenya

Chris Gomersall / Close-up of breaching Short-beaked common dolphin (Delphinus delphis), showing tooth marks inflicted by other dolphins - probably during courtship. Hebrides, Scotland. July .

Paul Williams / Glacial pock marks on a builder. On the Western Plataeu of Mount Kinabalu, Borneo, May 2013.

Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)

Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)

Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)

Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)

Juergen Freund / The Gregory Tree, an Australian baobab / Boab tree (Adansonia gregorii) which marks the site of the explorer AC Gregory's camp site 1855-56, Kimberley, Western Australia.

Juergen Freund / The Gregory Tree, an Australian baobab / Boab tree (Adansonia gregorii) which marks the site of the explorer AC Gregory's camp site 1855-56, Kimberley, Western Australia.

Tui De Roy / Nazca Booby (Sula granti) incubating eggs on nest with feces spray marks, Gardner Islet, Floreana Island, Galapagos Islands, Ecuador

Sandesh Kadur / Panning shot of a female Bengal tiger (Panthera tigris tigris) walking through woodland, scent marks a tree, Ranthambore National Park, Rajasthan, India. 2016.

Ingo Arndt / European beaver (Castor fiber) fresh bite marks on beech tree, from feeding on bark , Spessart, Germany, November.

Ingo Arndt / European beaver (Castor fiber) fresh bite marks on beech tree , Spessart, Germany, February.

Ingo Arndt / European beaver (Castor fiber) fresh bite marks on beech tree , Spessart, Germany, February.

Ingo Arndt / European Beaver (Castor fiber) fresh bite marks on huge (80cm in diameter) beech tree , Spessart, Germany, November.

Wild Wonders of Europe / Widstrand / Beech trees (Fagus sylvatica) with bark gnawed by horses, Linden Tree Retreat & Ranch, Velika Plana, Velebit Mountains Nature Park, Croatia, April 2014.

John & Mary-Lou Aitchison / Female European otter (Lutra lutra) grooming her cub on a rock, stops and scent marks, Scotland, UK, November.

Francois Savigny / Fresh pug marks of Bengal tigers {Panthera t tigris} on river bank, Bandhavgarh NP, India

Francois Savigny / Guard studying Bengal tiger pug marks {Panthera tigris tigris} Bandhavgarh NP India 1999,

Tony Wu / Bryde's whale (Balaenoptera edeni) female's carcass covered with bites from cookie cutter sharks, indicating that the whale spent substantial time in deep water, where cookie cutter sharks reside. Gul...

Tony Wu / Killer whale (Orcinus orca) male with rake marks visible along back. Hamn, Senja, Norway, Atlantic Ocean.

SCOTLAND: The Big Picture / Diver going to shot line that marks the start of the survey point, Lamlash Bay, Isle of Arran, South Arran Marine Protected Area, Scotland, UK, August 2016.

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestis) cone partially chewed / eaten by a Red squirrel (Sciurus vulgaris) on lichen covered forest floor. Cairngorms National Park, Highlands, Scotland, UK, August 2016.

Loic Poidevin / Beaver (Castor fiber) marks on base of tree, Lac de Neuchatel, Switzerland, November

Richard Robinson / Humpback whale (Megaptera novaeangliae) calf around six metres long with distinctive bite marks from a Great White Shark (Carcharodon carcharias) off the coast of Raoul Island in the Kermadec archipel...

Richard Robinson / Antipodean albatross (Diomedea antipodensis) and Northern giant petrel (Macronectes halli) feeding on a recently deceased Humpback whale (Megaptera novaeangliae) calf around six metres long with disti...

Mark Carwardine / Humpback whale (Megaptera novaeangliae) blowing or spouting at surface, showing rake marks on tail made by Orca (Orcinus orca), Southeast Alaska, USA, August

SCOTLAND: The Big Picture / Alder (Alnus glutinosa) tree felled by Eurasian beaver (Castor fiber), Knapdale Forest, Argyll, Scotland, UK, June 2016.

SCOTLAND: The Big Picture / Alder (Alnus glutinosa) tree felled by Eurasian beaver (Castor fiber), Knapdale Forest, Argyll, Scotland, UK, June 2016.

SCOTLAND: The Big Picture / Alder (Alnus glutinosa) tree felled by Eurasian beaver (Castor fiber), Knapdale Forest, Argyll, Scotland, UK, June 2016.

SCOTLAND: The Big Picture / Tree with signs of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Felled tree, a sign of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Felled tree, a sign of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Felled tree with signs of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Eurasian beaver (Castor fiber) feeding at night, Knapdale Forest, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Eurasian beaver (Castor fiber) feeding at night, Knapdale Forest, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Trees and stumps with evidence of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, site of Scottish Beaver Trial, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Tree with signs of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, site of Scottish Beaver Trial, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Tree felled by Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, site of Scottish Beaver Trial, Argyll, Scotland, UK, June.

John Cancalosi / Fossil ripple marks, from Rocky Mountain Belt Supergroup, northwestern Montana, USA. Pre-Cambrian rock from 600 million years to 1 billion years ago.

Loic Poidevin / View along the Grand Canal with gondolas and St Marks Basilica in the background, Venice, Italy

Loic Poidevin / Looking over Grand Canal to Piazza San Marco with St Marks Basilica and Doges Palace, Venice, Italy

Neil Aldridge / Defra Field Worker marks a European Badger (Meles meles) with spray paint after successfully vaccinating it in a cage trap as part of bovine tuberculosis (bTB) vaccination trials in Gloucestershire, U...

Gary K. Smith / Adriatic coastline and waterfront of Venice with prominent bell tower in St Marks Square, Italy, April.

Nick Turner / Farm track through oil seed rape (Brassica napus), Calmsden, Gloucestershire, UK. April 2015.

Zoltan Nagy / Tyre marks of logging vehicles and pile of logs, Calimani National Park, Carpathians, Romania. August 2011

Pal Hermansen / Human leg covered in Mosquito (Culicidae) bites.

Nick Upton / Sick, injured Grey seal pup (Halichoerus grypus) 'Jenga', with bite marks on its flippers and body and a runny nose, washed up on the tide line, Widemouth Bay, North Cornwall, UK, October.

Jeff Foott / American Beaver (Castor canadensis) bite marks on tree, Zion National Park, Utah

Daniel Heuclin / Green rat snake (Boiga cyanea) bite marks on human hand. Venomous species.

Pascal Tordeux / Tyre tracks in sand on beach as low tide, Crotoy, Somme Bay, Pas de Calais, France, July 2015.

Donald M. Jones / Black Bear (Ursus americanus) claw marks on tree, western Canada

Nick Upton / Michelle Clement, a British Divers Marine Life Rescue animal medic preparing to wrap a towel around a sick, injured Grey seal pup (Halichoerus grypus) 'Jenga', with bite marks on its flippers and body...

Nick Upton / Michelle Clement, a British Divers Marine Life Rescue animal medic taking an intial look at a sick, injured Grey seal pup (Halichoerus grypus) 'Jenga', with bite marks on its flippers and body and a r...

Nick Upton / Donna La Broy looking at a sick, injured Grey seal pup (Halichoerus grypus) 'Jenga', with bite marks on its flippers and body and a runny nose, which she found washed up on the tide line, Widemouth Ba...