Tui De Roy / Broken fast ice under midnight sun and impending storm, Edward VIII Bay, Kemp Coast, east Antarctica

Tui De Roy / Ringed Seal (Phoca hispida) surfacing in brash ice, Svalbard Archipelago, Norwegian Arctic

Tui De Roy / Ringed Seal (Phoca hispida) surfacing in brash ice, Svalbard, Norwegian Arctic

Jami Tarris / Floating ice, Spitsbergen, Svalbard, Norway

Ashley Cooper / Members of an expedition cruise to Antarctica in a Zodiac in Fournier Bay, Gerlache Strait, Antarctic Peninsula.

Ashley Cooper / Akademik Sergey Vavilov, an ice strengthened ship on an expedition cruise to Antarctica, in the Gerlache Strait, Antarctic Peninsula.

Ashley Cooper / Members of an expedition cruise to Antarctica in a Zodiac with sea kayaks, Fournier Bay, Gerlache Strait, Antarctic Peninsula.

Ashley Cooper / Members of an expedition cruise to Antarctica in a Zodiac with sea kayaks, Fournier Bay, Gerlache Strait, Antarctic Peninsula.

Ashley Cooper / Passenger from an Antarctic cruise ship amongst coastal scenery beneath Mount Walker, Paradise Bay off Graham Land on the Antarctic Peninsula.

Ashley Cooper / Stunning coastal scenery beneath Mount Walker, Paradise Bay off Graham Land, Antarctic Peninsula.

Ashley Cooper / Coastal scenery beneath Mount Walker, Paradise Bay off Graham Land, Antarctic Peninsula.

Ashley Cooper / Coastal scenery beneath Mount Walker, Paradise Bay off Graham Land, Antarctic Peninsula.

Ashley Cooper / Coastal scenery beneath Mount Walker, Paradise Bay off Graham Land, Antarctic Peninsula.

Ashley Cooper / Coastal scenery beneath Mount Walker, Paradise Bay off Graham Land, Antarctic Peninsula.

Ingo Arndt / Aerial view of edge of ice flow of Perito Moreno glacier, Patagonia, Argentina

Brent Stephenson / Humpback whale (Megaptera novaeangliae) surfacing through brash ice, Errera Channel, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Brash ice and bergy bits (small icebergs) covering the surface of the Lemaire Channel, Antarctic Peninsula, Antarctica, January 2012.

Colin Monteath/ Hedgehog House / Brash ice and small iceberg at sunset, Cierva Cove, Antarctic Peninsula, Antarctica

Colin Monteath/ Hedgehog House / Brash ice at sunset, Cierva Cove, Antarctic Peninsula, Antarctica

Colin Monteath/ Hedgehog House / Brash ice near coast, Una Peaks, Lemaire Channel, Antarctic Peninsula, Antarctica

Colin Monteath/ Hedgehog House / Brash ice near coast, Una Peaks, Lemaire Channel, Antarctic Peninsula, Antarctica

Colin Monteath/ Hedgehog House / Brash ice near coast, Una Peaks, Lemaire Channel, Antarctic Peninsula, Antarctica

Colin Monteath/ Hedgehog House / Kayakers in brash ice, Cierva Cove, Antarctic Peninsula, Antarctica

Gerry Ellis / Ice floes, Antarctica

Rick Tomlinson / SY "Adele", 180 foot Hoek Design, motoring through the brash ice in Wilhelmina Bay, Antarctica, January 2007 Non editorial uses must be cleared individually.

Rick Tomlinson / SY "Adele", 180 foot Hoek Design, motoring through the brash ice in Wilhelmina Bay, Antarctica, January 2007 Non editorial uses must be cleared individually.

Bryan and Cherry Alexander / Small pieces of brash ice cover the surface of the water by the Rolige Brae, evidence of recent activity. East Greenland, September 2005.

Colin Monteath / Brash ice at sunset, Cierva Cove, Antarctic Peninsula, Antarctica

Nick Garbutt / Brash ice off Spitsbergen, Svalbard, Arctic Norway, June 2009

Andy Rouse / Brash ice in bay with dark clouds in the sky, Antarctica, February 2006

Andy Rouse / Aerial shot of brash ice, Patagonia Bay, Antarctica, February 2006

Andy Rouse / Aerial view of coastal mountains and brash ice on sea, Patagonia Bay, Antarctica, February 2006

Andy Rouse / Aerial view of brash ice, Patagonia Bay, Antarctica, February 2006

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) surfacing to breathe through brash ice, Admiralty Sound, Weddell Sea, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) surfacing to breathe through brash ice, Admiralty Sound, Weddell Sea, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) group surfacing to breathe through brash ice, Admiralty Sound, Weddell Sea, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) pair surfacing to breathe through brash ice, Admiralty Sound, Weddell Sea, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) pair surfacing to breathe through brash ice, Admiralty Sound, Weddell Sea, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) trio surfacing to breathe through fast ice lead, Admiralty Sound, Weddell Sea, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) pair surfacing to breathe through brash ice, Admiralty Sound, Weddell Sea, Antarctica

Jan Vermeer / Brash ice, Antarctica

Tui De Roy / Broken fast ice under midnight sun and impending storm, Edward VIII Bay, Kemp Coast, east Antarctica

Chris Gomersall / Glacier and brash ice, Drygalski Fjord, South Georgia, Antarctica. January 2007.

LYNN M. STONE / Tourists on Russian boat moving through brash ice. Antarctica, 1994

Martha Holmes / David Rootes, assistant on BBC television series Life in the Freezer, amongst brash ice while helping set up remote cameras to film Adelie penguins swimming, 1992

Martha Holmes / Adelie penguin swimming in brash ice (Pygoscelis adeliae) Antarctica

Sue Flood / Brash ice in Antarctic peninsula , Feb 2005.

Mike Potts / Mendenhall Glacier joining the sea, Juneau, Alaska, USA 1988

Doug Allan / Glacial front of Piu XI glacier, Southern Chile, South America

Larry Michael / Tourists kayaking through breakaway brash ice alongside coastal glacier, Johns Hopkins Inlet, Glacier Bay NP, Alaska, USA

Peter Scoones / Brash ice washed up on beach, South Georgia, South Atlantic Islands

Larry Michael / Harbour / Common seals (Phoca vitulina) hauled out on brash ice below Sawyer Glacier, Tracy Arm, South East Alaska, USA

Hanne & Jens Eriksen / Garibaldi fjord with glacier, Beagle Channel, Chile

Tui De Roy / Tour ship Polaris and brash ice under evening light, Kross Fjord, Svalbard Archipelago, Norway

Flip Nicklin / Polar Bear (Ursus maritimus) on ice field, Canada

Tui De Roy / Tabular icebergs among fast ice breaking out in summer, Prince Olav Coast, East Antarctica

Tui De Roy / Broken fast ice under midnight sun and impending storm, Edward VIII Bay, Kemp coast, east Antarctica

Tui De Roy / Dwarf Minke Whale (Balaenoptera acutorostrata) breathing through crack in broken fast ice, McMurdo Sound, Ross Sea, Antarctica

Martha Holmes / Reflections in Lemaire Channel with brash ice, Antarctica

Colin Monteath / Brash ice at sunset, Cierva Cove, Antarctic Peninsula, Antarctica

Jan Vermeer / Brash ice, Antarctica

Jan Vermeer / Brash ice, Antarctica

Colin Monteath / Detail of dimpled ice on brash ice floes, Penguin Island, South Shetland Islands, Antarctica

Colin Monteath / Brash ice in Paradise Bay, sunset on peaks near Gerlache Strait, Antarctic Peninsula, Antarctica

Frederique Olivier / Wide-angle shot tilting up from brash ice to glacier and mountain, Magdalena Fjord, Svalbard, Norway, 2016.

Frederique Olivier / Wide-angle shot tilting up from brash ice to glacier and mountain, Magdalena Fjord, Svalbard, Norway, 2016.

Frederique Olivier / Wide-angle shot of brash ice and glacier in Magdalena Fjord, Svalbard, Norway, 2016.

Frederique Olivier / Black legged kittiwakes (Rissa tridactyla) on brash ice in front of Magdalena glacier, Magdalena Fjord, Svalbard, Norway, 2016.