Andy Rouse / Snowy owl (Bubo scandiaca) flying, wings forward, Canada. Wild

Todd Mintz / Narwhal (Monodon monoceros) pod at surface with one tusk visible, Arctic Bay, Baffin Island, Canada, June

David Woodfall / Aerial view of pancake ice sheet cracking and melting in Hudson Bay, Manitoba, Canada, December 2004

Steven Kazlowski / Polar bear (Ursus maritimus) sow standing with her cub outside their den in late winter, Arctic coast of Alaska

Steven Kazlowski / Polar bear (Ursus maritimus) pair walking amongst rough ice on the frozen eastern Chukchi Sea, Arctic Alaska

Tom Vezo / Arctic tern {Sterna paradisaea} stretching wings, USA.

Bryan and Cherry Alexander / Inuit hunter with Kakivak (fishing spear) and caught Arctic charr (Salvelinus alpinus). Igloolik, Nunavut, Canada, 1993. 40 BELOW bookplate.

Bryan and Cherry Alexander / Graves of three of Franklin's sailors dated 1846 and two others. Beechey Island, Nunavut, Canada, 2002.

Bryan and Cherry Alexander / Graves of three of Franklin's sailors dated 1846 and two others. Beechey Island, Nunavut, Canada, 2002.

David Woodfall / Polar bear (Ursus maritimus) in arctic landscape, Wapusk National Park, Churchill, Manitoba, Canada, December 2004

David Woodfall / Sub arctic landscape with ice and frozen sea, Wapusk National Park, Hudson Bay, Manitoba, Canada, December 2004

David Woodfall / Polar bears (Ursus maritimus) sleeping in snow bed, Wapusk National Park, Churchill, Manitoba, Canada, December 2004