Rick Tomlinson / Aerial view, taken from the mast, of SY "Adele"'s bow in the bay of an iceberg, Portal Point, Reclus Pennisula, Antarctica, January 2007 Non editorial uses must be cleared individually.

David Maitland / Close up of head of a male miniature Blue-winged olive mayfly (Acentrella sp). The male mayflys head is dominated by its remarkable red 'Turbinate' compound eyes which, directed upwards and phenomenal...

Alex Mustard / An adult female California sea lion (Zalophus californianus) head portrait, in a rocky underwater cave. La Paz, Baja California Mexico. Sea of Cortez, East Pacific Ocean. October

Steven Kazlowski / Polar bear (Ursus maritimus) head close-up portrait of an adult male, with snowflakes on fur, Barter Island, 1002 area of the Arctic National Wildlife Refuge, Alaska

Anup Shah / African lion cubs (Panthera leo) aged 9-12 months playing with an adolescent male, Masai Mara National Reserve, Kenya. April.

Gerrit Vyn / Molting Brant (Branta bernicla) being held in an enclosure during a banding operation in the Teshekpuk Lake Special Area. During their moult they are unable to fly. Arctic Coastal Plain, Alaska, USA

Michael Pitts / Southern giant petrel (Macronectes giganteus) head covered in blood feeding on carcass of an Elephant seal pup, with a penguin colony in the distance, St Andrews Bay, South Georgia

Wild Wonders of Europe / Radisics / Ice forming stalagmite structures in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008

Wild Wonders of Europe / Radisics / Ice formation in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008

Wild Wonders of Europe / Radisic / Ice forming stalagmite structures in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008

Andy Rouse / Mountain gorilla (Gorilla beringei beringei) silverback male scratching head, drunk on bamboo shoots, Volcanoes NP, Virunga mountains, Rwanda Note - if gorillas eat an excess of bamboo shoots they ca...

Michael & Patricia Fogden / Geoffroy's Tailless Bat (Anoura geoffroyi) visiting an epiphytic Bromeliad (Vriesia sp) note pollen on head and shoulders, Costa Rica

Karl Ammann / Baby Western lowland gorilla (Gorilla g gorilla) head portrait - victim of the illegal bushmeat and pet trade, Pointe Nior, Democratic Republic of Congo. After shooting an adult gorilla, bushmeat hunt...

Pete Oxford / Chagra cowboy portrait with roses in his hat band, on an overnight ride at a hacienda to herd cattle, Andes Mountains, Ecuador

Jim Brandenburg / American Bison (Bison bison) pair grazing on prairie under an anvil cloud, Nebraska

Mitsuaki Iwago / Freshwater Crocodile (Crocodylus johnstoni) with an open mouth, Australia

Mark Moffett / Tokay Gecko (Gecko gecko) foot pads showing scales which enable it to climb vertical surfaces by using an intermolecular force called Van der Walls force, southeast Asia

Nick Upton / Sign warning when it is unsafe to cross a tidal causeway, with the Worm's head cut off from the mainland as an island at high tide, Rhossili, The Gower peninsula, Wales, UK, July. Sequence 2 of 2 matc...

Nick Upton / Overview of the Worm's head cut off from the mainland as an island at high tide, Rhossili, The Gower peninsula, Wales, UK, July. Sequence 2 of 2, matching views at different tides

Nick Upton / Long exposure view of limestone rocks washed by waves with the Worm's head in the background, cut off from the mainland as an island at high tide, Rhossili, The Gower peninsula, Wales, UK, July. Seque...

Nick Upton / Limestone rocks washed by waves with the Worm's head in the background, cut off from the mainland as an island at high tide, Rhossili, The Gower peninsula, Wales, UK, July. Sequence 2 of 3 at differen...

Rick Tomlinson / Aerial view, taken from the mast, of SY "Adele"'s bow in the bay of an iceberg, Portal Point, Reclus Pennisula, Antarctica, January 2007 Non editorial uses must be cleared individually.

David Tipling / 2020VISION / Grey Partridge (Perdix perdix) with head stretched upwards in an alert posture, on a bare field, Norfolk, England, UK, April

Toby Roxburgh / 2020VISION / Fisherman with a full basket of Edible crabs (Cancer pagurus) and Spiny spider crabs (Maja squinado), caught using pots, with an old tin mine on cliffs in the background, Trewavas Head, Cornwall, Engl...

Nick Upton / Three Cornered Leek / Three Cornered Garlic (Allium triquetrum), an invasive species in the UK, flowering in dense clumps on coastal headland. Pentire Head, near Polzeath, Cornwall, April.

Nick Upton / Three Cornered Leek / Three Cornered Garlic (Allium triquetrum), an invasive species in the UK, flowering in dense clumps on coastal headland. Pentire Head, near Polzeath, Cornwall, April.

Juergen Freund / Mass of spawn of an infaunal head-shield slug (Philine sp) Batangas, Philippines. Philinids live in clean sand where they ingest bivalves with their radula and crush them with their massive gizzard p...

Juergen Freund / Mass of spawn on an infaunal Head-shield slug (Philine sp). Philinids live in clean sand where they ingest bivalves with their radula and crush them with their massive gizzard plates. Lembeh Strait, N...

Jenny E. Ross / Head portrait of an adult spectacled Caiman (Caiman crocodilus) partically submerged in water. The Pantanal, Mato Grosso du Sul, Brazil. September

Jenny E. Ross / Head portrait of an adult sloth bear (Melursus ursinus) in the Terai Arc forest of Nepal's Royal Chitwan National Park. Nepal, March

Suzi Eszterhas / King Penguin chick (Aptenodytes patagonicus) head portrait, leaning on the chest of an adult, Gold Harbor, South Georgia

Angelo Gandolfi / A totem-like head carved in an ancient Sweet Chestnut tree (Castanea sativa) Corsica island, France, February 2010

Angelo Gandolfi / A totem-like head carved in an ancient Sweet Chestnut tree (Castanea sativa), Corsica island, France, February 2010

Laurent Geslin / The Creux du Van cirque, an amphitheatre-like valley head shaped by glacial erosion. Seen in autumn, partly hidden by clouds. Switzerland

Laurent Geslin / The Creux du Van cirque, an amphitheatre-like valley head shaped by glacial erosion. Seen in autumn, partly hidden by clouds. Switzerland

Mark Moffett / Amazon Ant (Polyergus sp) female worker positioning mandibles to pierce the head of an ant from an alien nest, Sagehen Creek, California

Mary McDonald / Mountain Gorilla (Gorilla beringei beringei) head portrait in an expression of grimace, Rwandan jungle in the Volcanoes NP, Rwanda, Central Africa.

Petra Wegner / Double head portrait of a Border Collie, aged 7 years old, tricoloured, and an Australian Shepherd, red-tri coated.

Nick Garbutt / Battersby's Green Snake (Philothamnus battersbyi) head portrait moving along an Acacia branch. Tarangire National Park, Tanzania. February.

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) named Diego, an old male returned to the Galapagos from the San Diego Zoo in 1977 and sire of large number of young in captive breeding prog...

Kristel Richard / Head portrait of an Auvergne mare (Equus caballus) and her week-old colt, in Auvergne, France.

Kristel Richard / Head portrait of an Auvergne mare (Equus caballus) in Auvergne, France.

Kristel Richard / Head portrait of an Auvergne mare (Equus caballus) in Auvergne, France.

Matthew Maran / Head portrait of Bengal tiger (Panthera tigris tigris) viewed from an elephant, Bandhavgarh National Park, Madhya Pradesh, India

Wild Wonders of Europe / Radisic / Ice formations in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008.

Wild Wonders of Europe / Bartocha / Close-up of seed head of an Asteraceae covered in water droplets, Piano Grande/Monti Sibillini National Park, Umbria, Italy, May 2009

Wild Wonders of Europe / Radisic / Ice formations in Ledena Pecina (an ice cave) inside Obla Glava (Rounded head peak) Durmitor NP, Montenegro, October 2008

Andy Rouse / Hippopotamus (Hippopotamus amphibiius) with an African Jacana (Actophilornis africana) on its head removing ticks, South Africa (non-ex)

Edwin Giesbers / African elephant (Loxodonta africana) baby pushing its head against the leg of an adult, Tarangire NP, Tanzania

Thomas Marent / Panther Chameleon (Chamaeleo pardalis) male catching an insect, Andasibe-Mantadia National Park, Madagascar. Sequence 2 of 3

Thomas Marent / Panther Chameleon (Chamaeleo pardalis) male striking at an insect, Andasibe-Mantadia National Park, Madagascar. Sequence 1 of 3

Thomas Marent / Panther Chameleon (Chamaeleo pardalis) male striking at an insect, Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Panther Chameleon (Chamaeleo pardalis) male striking at an insect, Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Panther Chameleon (Chamaeleo pardalis) male striking at an insect, Andasibe-Mantadia National Park, Madagascar. Sequence 2 of 3

Thomas Marent / Panther Chameleon (Chamaeleo pardalis) male striking at an insect, Andasibe-Mantadia National Park, Madagascar

Kerstin Hinze / Northern gannet (Morus bassanus) adult flying with head at an angle, Helgoland, North Sea, Germany

Andrew Parkinson / Southern plains grey / Hanuman langur {Semnopithecus dussumieri} an adult male sits in tree with his head resting on his hand. Bandhavgarh National Park, Madhya Pradesh, India.

Albert Lleal / SEM close-up view of a Intertidal Crustacean at 70x magnification, an unidentified species, found on Kihim Beach, Mumbai, India

Albert Lleal / Mosquito (Aedes sp) SEM close-up of the head of a female showing the modified ovipositor used to obtain blood from host species, an appendage which does not exist among males

Mike Parry / Great White Shark (Carcharodon carcharias) attacking an Antarctic Petrel (Thalassoica antarctica), Dyer Island, Cape Province, South Africa

Konrad Wothe / Gyrfalcon (Falco rusticolus) female in white phase perching on an antler in the snow, North America

Theo Allofs / Giant River Otter (Pteronura brasiliensis) an endangered species, swimming, Pantanal, Brazil

Theo Allofs / Giant River Otter (Pteronura brasiliensis) an endangered species, swimming, Pantanal, Brazil

Theo Allofs / Giant River Otter (Pteronura brasiliensis) an endangered species, holding fish in mouth, Pantanal, Brazil

Shin Yoshino / Leopard (Panthera pardus) suffocating an Impala (Aepyceros melampus), Masai Mara, Kenya

Pete Oxford / Chinese man with shaved head, sitting outside of his house in Hutong - an old neighbourhood of Beijing - CHINA 2006

PREMAPHOTOS / Caterpillar larva of Noctuid moth (Noctuidae) with an orange 'false head' at its rear end, in savannah, South Africa

Piotr Naskrecki / Katydid (Listroscelis sp) spiny legs are an excellent hunting weapon, Guyana

Michael & Patricia Fogden / Geoffroy's Tailless Bat (Anoura geoffroyi) visiting an epiphytic Bromeliad (Vriesia sp) note pollen on head and shoulders, Costa Rica

Mark Raycroft / Caribou (Rangifer tarandus) bull scratching antlers against an evergreen sapling

Mark Raycroft / Siberian Husky (Canis familiaris) portrait of an adult resting on a rock

Mark Raycroft / Siberian Husky (Canis familiaris) portrait of an adult with one blue eye and one brown eye (Heterochromia) among garden flowers

Mark Raycroft / Siberian Husky (Canis familiaris) portrait of an adult resting on a rock

Daniel Gomez / Head portrait of an Anaconda {Eunectes murinus}. Para State, Brazil.

Mark Raycroft / German Shepherd (Canis familiaris) portrait of an adult sitting in the snow

Mark Raycroft / Golden Retriever (Canis familiaris) portrait of an adult reclining in snow next to birch tree

Mark Raycroft / Golden Retriever (Canis familiaris) portrait of an adult standing in the snow

Mark Raycroft / Rottweiler (Canis familiaris) portrait of an adult male

Mark Raycroft / Golden Retriever (Canis familiaris) portrait of an adult standing in the snow

Mark Raycroft / Standard Wire-haired Dachshund (Canis familiaris) portrait of an adult with its front paws up on a fence

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) swimming in lake with an orange training dummy

Mark Raycroft / West Highland White Terrier (Canis familiaris) sitting between rock and an iris

Mark Raycroft / German Shepherd (Canis familiaris) portrait of an adult sitting on a dock

Mark Raycroft / German Shepherd (Canis familiaris) portrait of an alert adult female dog with fall colors in the background

Mark Raycroft / German Shepherd (Canis familiaris) portrait of an alert adult dog with fall colors in the background

Mark Raycroft / German Shepherd (Canis familiaris) close-up portrait in profile of an adult dog

Mark Raycroft / German Shepherd (Canis familiaris) portrait of an alert adult resting in grassy field

Yva Momatiuk & John Eastcott / Nutria (Myocastor coypus) emerging from swamp, Lake Martin, Louisiana, native to South America and introduced to Europe, Asia and North America, considered an invasive pest in wetland areas

Richard Du Toit / Cheetah (Acinonyx jubatus) adult female strangling an Impala (Aepyceros melampus) female, Phinda Game Reserve, South Africa

Heidi & Hans-Juergen Koch / Domestic Cat (Felis catus) sitting on an old chair in a garden and meowing, The Hemingway House, Key West, Florida

Patricio Robles Gil / Moose (Alces alces) bull grazing in an alpine lake, northern Canadian Rockies, Canada

Patricio Robles Gil / Moose (Alces alces) bull grazing in an alpine lake, northern Canadian Rockies, Canada

Patricio Robles Gil / Moose (Alces alces) bull grazing in an alpine lake, northern Canadian Rockies, Canada

Mark Moffett / Harvestman (Phalangodidae) an arachnid, close-up portrait showing fused abdomen which differentiates Harvestmen from other spiders, Parana State, Atlantic Forest, Brazil

Heidi & Hans-Juergen Koch / Great Egret (Ardea alba) standing on the back of an American Alligator (Alligator mississippiensis), Florida

Heidi & Hans-Juergen Koch / Domestic Cattle (Bos taurus) adults standing together, an invitation for social grooming, Germany