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...

Neil Lucas / Sundog / Parhelion (circle of light around the sun) with large ice fumerole in the foreground, McMurdo Sound, Ross Sea, Antarctica, November 2008

Neil Lucas / Weddell seal (Leptonychotes weddellii) looking up from ice-hole, McMurdo Sound, Ross Sea, Antarctica, November 2008

Neil Lucas / Shadow of helicopter returning to the Russian ice breaker ship, Kapitan Khlebnikov, McMurdo Sound, Ross Sea, Antarctica, November 2008

Neil Lucas / Camerman Doug Allan at frozen water surface of drilled ice hole, BBC film crew, McMurdo Sound, Ross Sea, Antarctica, November 2008

Neil Lucas / Glacier and sea ice, with crack in ice visible, McMurdo Sound, Ross Sea, Antarctica, November 2008

Neil Lucas / Weddell seal (Leptonychotes weddellii) male surfacing in ice hole, McMurdo Sound, Ross Sea, Antarctica, November 2008

Neil Lucas / Interior of Captain Scott's hut, Hut Point, McMurdo Sound, Ross Sea, Antarctica, November 2008

Norbert Wu / Ice floes that have broken off sea ice edge in late summer, coast guard icebreaker in background, McMurdo Sound, Antarctica

Norbert Wu / Orca (Orcinus orca) pod surfacing in icebreaker channel, must find open pockets of water to breathe, McMurdo Sound, Antarctica

Norbert Wu / Coast guard icebreaker travels through ice floes which have broker off sea ice edge in late summer, McMurdo Sound, Antarctica

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...