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 / 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 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 / 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 / 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