Konrad Wothe / Polar Bear (Ursus maritimus) males fighting, Hudson Bay, Canada

Konrad Wothe / Polar Bear (Ursus maritimus) sleeping in the snow, Hudson Bay, Canada

Konrad Wothe / Polar Bear (Ursus maritimus) males fighting, Hudson Bay, Canada

TOM MANGELSEN / Reflected sunset on sea ice, Wager Bay, NW Territories, Canada

Terry Andrewartha / Polar bear {Ursus maritimus} cubs following mother on ice, Hudson Bay, Canada

Theo Allofs / Many icebergs drifting in the Arctic at midnight, end of June, mid summer night, Disko Bay, Greenland

Mike Potts / Arctic tern {Sterna paradisaea} carrying fish in bill, Beadnell Bay, Northumberland, England

Mike Potts / Arctic Tern {Sterna paradisaea} hovering over nest site in sand dunes, Beadnell Bay, Northumberland, UK

Mike Potts / Arctic Tern {Sterna paradisaea} returning to nest with sand eel, Beadnell Bay, Northumberland, UK

Mike Potts / Arctic Tern {Sterna paradisaea} adult at nest with day old chick, Beadnell Bay, Northumberland, UK

Mike Potts / Arctic Tern {Sterna paradisaea} hovering while fishing, Beadnell Bay, Northumberland, UK

David Welling / Arctic lupine flower (Lupinus arcticus) Hatcher Bay, Alaska

Flip Nicklin / Polar Bear (Ursus maritimus) swimming near tour boat, Wager Bay, Canada

Flip Nicklin / Inuits testing ice strength, Arctic Bay, Baffin Island, Canada

Flip Nicklin / Inuit hunters crossing ice break, Admirality Inlet, Arctic Bay, Canada

Flip Nicklin / Bowhead Whale (Balaena mysticetus) in open water, Isabella Bay, Baffin Island, Canada

Flip Nicklin / Bowhead Whale (Balaena mysticetus) researcher Kerry Finley approaching whale, Isabella Bay, Canada

Sue Flood / Arctic sea ice landscape, near Arctic Bay, Nunavut, June 2000

Peter Scoones / Atlantic Walrus (Odobenus rosmarus) Hudson bay, Canada

Peter Scoones / Atlantic Walrus (Odobenus rosmarus) in water, Hudson bay, Canada

Doug Allan / Inuit hunter with child, cutting up dead Narwhal {Monodon monoceros} Arctic Bay, Canadian arctic.

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Doug Allan / Inuit with hunted male Narwhal {Monodon monoceros} Lancaster Bay, Canadian Arctic

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Sue Flood / Parhelia sun effect, Arctic bay, Nunavut, Baffin Island, Canada

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Martha Holmes / Inuits skinning Caribou (Rangifer tarandus) Wager Bay, NW Territories, Canada, sequence

Sue Flood / Doug Allan driving skidoo near Arctic Bay, Nunavut, Baffin Island, Canadian Arctic, June 2000

Sue Flood / Polyna (hole in ice kept open by currents) with eider ducks in Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Eider duck (Somateria mollisima) stretching wings backwards in group of resting eider ducks. Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Female eider (Somateria mollisima) eating urchin, Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Female eider (Somateria mollisima) eating mussel, Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Eider duck (Somateria mollisima), Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Female eider (Somateria mollisima) eating urchin, Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Polyna (hole in ice kept open by currents) with eider ducks in Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Sue Flood / Female eider (Somateria mollisima) eating urchin, Belcher Islands near Sanikiluaq, Hudson Bay, Canada. 2005

Doug Allan / Inuit community of Arctic Bay in spring, Baffin Island, Canadian Arctic, NW Territories

Hans Christoph Kappel / Dusky (Blue) grouse (Dendragopus obscurus) Glacier Bay NP, Alaska

Doug Allan / Husky pup, domestic dog {Canis familiaris} feeding on seal meat, Arctic Bay, Canada

Sue Flood / Researchers with tranquilised male Polar bear {Ursus maritimus} Hudson Bay, Canada

Sue Flood / Researcher measures head of tranquilised Polar bear {Ursus maritimus} Hudson bay, Canada

Sue Flood / Close-up of male Polar bear paw {Ursus maritimus} Hudson Bay, Canada, September 2001

Terry Andrewartha / Polar bear snow footprints on ice {Ursus maritimus} Hudson Bay, Canada

Nigel Bean / Herd of Caribou {Rangifer tarandus} in snow, annual migration, near Goose Bay, Labrador, Canada

Martha Holmes / Summer Arctic flowers, with sea ice behind, Wager Bay, Canada

Martha Holmes / Summer Arctic flowers, with sea ice behind, Wager Bay, Canada

Doug Allan / Rotting spring sea ice, Hudson Bay, Canadian Arctic

TOM MANGELSEN / Arctic landscape at sunset, Hudson Bay, Churchill, Manitoba, Canada

TOM MANGELSEN / Arctic landscape at sunset, Hudson Bay, Churchill, Manitoba, Canada

Doug Allan / Belugas feeding on Arctic cod school {Delphinapterus leucas} Radstock Bay Canadian Arctic

Doug Allan / Beluga whales / White whales (Delphinapterus leucas) feeding on a school of Arctic cod, Radstock Bay, Lancaster Sound, Canadian Arctic

Hanne & Jens Eriksen / Iceberg with mountains behind, Disko Bay, Greenland, summer

Doug Allan / Melting sea ice Kongsfjord Bay, Svalbard, Norway

Eric Baccega / Dog handler + dogs on Giant Kangia fjord, Disko Bay, Greenland. Wearing polar bear skin trousers

Eric Baccega / Dog handler on Giant Kangia fjord, Disko Bay, Greenland. Wearing polar bear skin trousers

Doug Allan / Inuit taking flesh off hunted Narwhal, Lancaster Bay, Canadian Arctic

Doug Allan / Man building an igloo, Baffin Island, Canadian Arctic Islands. Sequence

Eric Baccega / Ice field, Disko Bay, Greenland

TOM MANGELSEN / Arctic fox in icy landscape, Hudson Bay, Canada.

TOM MANGELSEN / Polar bear mother and cubs Hudson Bay, Canada.

TOM MANGELSEN / Arctic fox in icy landscape. Hudson Bay, Canada.

TOM MANGELSEN / Arctic Fox Vulpes lagopus) head profile portrait, Hudson Bay, Canada.

TOM MANGELSEN / Polar bear (Ursus maritimus) mother and cub Hudson Bay, Canada.

TOM MANGELSEN / Polar bear testing ice with with paw, Hudson Bay, Canada.

TOM MANGELSEN / Polar bear {Ursus maritimus) mother and cub Hudson Bay, Canada.

TOM MANGELSEN / Arctic Fox (Vulpes lagopus) Hudson Bay Canada

Eric Baccega / Boats unloading fish in harbour, Illulissat, Disko Bay, Greenland

Eric Baccega / Dog sledge on Giant Kangia fjord, Disko Bay, Greenland. Transport for tourists

Eric Baccega / Illulissat (population 4,000) Disko Bay, Greenland

Eric Baccega / Aerial view of Illulissat (population 4000) Disko Bay, Greenland

Eric Baccega / Halibut stored for personal consumption, Disko Bay, Greenland

Eric Baccega / Ice field, Disko Bay, Greenland

Eric Baccega / Dog sledge on Giant Kangia fjord, Disko Bay, Greenland. Transport for tourists

Eric Baccega / Icebergs and melting pack ice, Disko Bay, Greenland

Eric Baccega / Halibut drying for personal consumption, Disko Bay, Greenland

Eric Baccega / Dog sledge on Giant Kangia fjord, Disko Bay, Greenland. Transport for tourists

Eric Baccega / Dog sledge on Giant Kangia fjord, Disko Bay, Greenland. Transport for tourists

Eric Baccega / Ice field with setting / rising sun, Disko Bay, Greenland

Eric Baccega / Boats unloading fish in harbour, Illulissat, Disko Bay, Greenland

TOM MANGELSEN / Arctic fox in distance, travelling over ice, Hudson Bay

TOM MANGELSEN / Polar bear {Ursus maritimus} leaping to ice floe, Hudson Bay

TOM MANGELSEN / Polar bear leaping for ice floe (Ursus maritimus) Hudson Bay, Manitoba

Matthias Breiter / Arctic Fox (Alopex lagopus) traveling across rocks on Hudson Bay coast, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) male traveling along Hudson Bay coast, Canada

Matthias Breiter / Arctic Fox (Alopex lagopus) along Hudson Bay Coast, Canada

Matthias Breiter / Arctic Fox (Alopex lagopus) searching for food along Hudson Bay coast, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) male, traveling along Hudson Bay coast, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) male, traveling along Hudson Bay coast, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) male, traveling along Hudson Bay coast, arctic tundra, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) male, traveling along Hudson Bay coast, arctic tundra, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) two juvenile males, traveling along Hudson Bay coast, Canada

Matthias Breiter / Polar Bear (Ursus maritimus) male traveling along Hudson Bay coast, Canada