Chadden Hunter / Brinicles (brine icicles or ice stalactites) forming under the ice, growing towards the sea floor, Ross Sea, McMurdo Sound, Antarctica. Taken on location for 'Winter' episode of the BBC Frozen Planet...

Chadden Hunter / Entering the ice caves of Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Person standing infront of long icicles, outside volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Cameraman Jeff Turner and Producer Chadden Hunter exposed at -40 degrees in Arctic circle in Northern Canada while filming wolves and bison hunting sequence. Taken on location for BBC Frozen Planet se...

Chadden Hunter / Husky dog (Canis familiaris) Northern Canada, taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Close up of Husky dog eyes (Canis familiaris), note the different eye colour, Northern Canada. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / King penguin (Aptenodytes patagonicus) chick creche enduring harsh weather, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / King penguins (Aptenodytes patagonicus) walk along beach, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / King penguin (Aptenodytes patagonicus) chicks in mass breeding colony, St Andrews Bay, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / King penguins (Aptenodytes patagonicus) on beach, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / King penguins (Aptenodytes patagonicus) heading out to sea, crossing tidal surf to feed in the open seas, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Emperor penguins (Aptenodytes forsteri) explode out of the water, returning to breed at Cape Washington, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Frozen Planet team, training on snow mobiles, Svalbard. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Filming on the Antarctic sea-ice at the edge of a small hole. A cameraman gets a shock when a Killer whale (Orcinus orca) mother and calf explode out of the water in front of his face. Taken on locat...

Chadden Hunter / Snow goose with gosling (Chen caerulescens) at sunset. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Emperor penguins (Aptenodytes forsteri) males dive through openings in the sea ice to take their first swim in over 4 months as they have spent the bleak winter incubating their eggs. Cape Washington,...

Chadden Hunter / King penguins (Aptenodytes patagonicus) crossing water to reach breeding site, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / King penguins (Aptenodytes patagonicus) crossing water to reach breeding site, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / King penguins (Aptenodytes patagonicus) crossing water to reach breeding site, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Southern elephant seal (Mirounga leonina) close up of sleeping individual, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Gelada baboon (Theropithecus gelada) group grazing, filmed for the Mountains episode of the BBC tv series Planet Earth, Simien Mountains National Park, Ethiopia, Oct 2003

Chadden Hunter / Dallol hot springs where water heated by magma laden with potassium, sulphur and iron spews up through salt pans staining the salt deposits with vivid colours, in the bottom of the Rift Valley, 120 me...

Chadden Hunter / Canadian timber wolf / Northwestern wolf (Canis lupus occidentalis) pack moving through snow, Wood Buffalo National Park, Alberta, Canada. Taken on location for BBC Frozen Planet, March 2009.

Chadden Hunter / Cameraman, Didier Noirot, filming the formation of 'brinicles' (brine icicles or ice stalactites) under the ice, Ross Sea, McMurdo Sound, Antarctica. Taken on location during the filming of 'Winter' f...

Chadden Hunter / Geographical South Pole marker, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Stormy conditions at the entrance to ice caves of Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Stormy conditions outside the entrance to ice caves of Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Filming around the extremely delicate ice formations in volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Entering the ice caves of Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Delicate ice crystal formations inside volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Entering the ice caves of Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Cameraman Gavin Thurston filming ice crystals under volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Filming around the extremely delicate ice formations in volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Weddell seal (Leptonychotes weddellii) nostrils visible at icy breathing hole, Antarctica, taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / BBC filming team used the willow scrub as a blind, using sign language so as not to spook either Bison (Bison bison) or Timber wolves (Canis lupus) they were trying to film. The snowmobiles were aban...

Chadden Hunter / Getting snow off snowmobiles after successful filming of Timber wolves hunting bison, Arctic circle in northern Canada. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Travelling across Northern Canada on skidoo, Arctic circle, Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Travelling across Northern Canada on skidoos, Arctic circle, Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / King penguin (Aptenodytes patagonicus) close up of throat feather pattern, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Snow geese (Chen caerulescens) standing on ice, Arctic. Taken on location for BBC Frozen Planet series, 2008

Chadden Hunter / Aerial view of Timber wolves (Canis lupus) attacking a Bison calf (Bison bison) on the Arctic circle in Northern Canada. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Husky dogs (Canis familiaris) linked to sledge, Northern Canada. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Aerial view of pack of Timber wolves (Canis lupus) after successful Bison (Bison bison) hunt, Arctic circle in Northern Canada. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Aerial view of hunting pack of Timber wolves (Canis lupus) in Arctic circle in Northern Canada, Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Aerial view of hunting pack of Timber wolves (Canis lupus) in Arctic circle in Northern Canada, Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Sunset over Northern Canada landscape, taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Herd of Bison (Bison bison) feeding in snow in Arctic Circle, Northern Canada. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Close up of Gentoo penguin feet (Pygoscelis papua), South Georgia. Taken on location for BBC Frozen Planet series, 2008