Martha Holmes / Bluefin tuna {Thunnus thynnus} Kushimoto Tuna Farm Japan. Bluefin tuna can swim at speeds of 50mph - they would win a silver swimming medal in an animal olympics competition.

Martha Holmes / BBC field camp at Cape Washington Antarctica (for filming Blue Planet)

Martha Holmes / Polar bear swimming. Canada (Ursus maritimus) NW Territories

Martha Holmes / Burrowing owl (Athene cunicularia) living in a wrecked helicopter fuselage. Florida, USA. August 2008.

Martha Holmes / Edge of large piece of ice sheet drifting in sea. Antarctic Peninsula. February 2008.

Martha Holmes / Cape buffalo {Syncerus caffer caffer} large herd drinking in Luangwa river, Zambia.

Martha Holmes / Emperor penguin flying out of water {Aptenodytes forsteri} Cape Washington, Antarctica

Martha Holmes / Mountain and glacier with ice floes, Antarctic Peninsula summer, Antarctica

Martha Holmes / Emperor penguins {Aptenodytes forsteri} jumping out of sea onto ice, Cape Washington, Antarctica

Martha Holmes / Emperor penguin flying out of water {Aptenodytes forsteri} Cape Washington, Antarctica.

Martha Holmes / Bowhead whale releasing breathing out underwater {Balaena mysticetus} Arctic

Martha Holmes / Pod of Killer whales {Orcinus orca} with snowy mountains behind, Tysfiord, Norway

Martha Holmes / Iceberg prow, summer, Antarctica

Martha Holmes / Male Killer whale {Orcinus orca} at surface, Tysfjord mountains, sunset, Autumn, Norway

Martha Holmes / Killer whale pod, Tvsfiord, Norway, Europe.

Martha Holmes / Chimpanzee {Pan troglodytes} hand on bar of cage.

Martha Holmes / Southern elephant seal {Mirounga leonina} close-up of hand-like flipper scratching, Falkland Islands.

Martha Holmes / European river otter eats crab (Lutra lutra) Shetland Is, UK. Juvenile male.

Martha Holmes / Hippopotamus yawning, mouth open (Hippopotamus amphibius) Luangwa River, Zambia

Martha Holmes / Detail of Hippopotamus skin showing oily secretion {Hippopotamus amphibius}

Martha Holmes / Group of Hippopotamuses in river (Hippopotamus amphibius) Luangwa River, Zambia, Africa.

Martha Holmes / Juvenile European river otter (Lutra lutra) Shetland Isles. UK Summer on the coast.

Martha Holmes / Cameraman Doug Allan prepares to film swimming polar bear from boat. On location for BBC Polar Bear programme 1996

Martha Holmes / Bowhead whale just under ice, Arctic

Martha Holmes / Polar bear cub peering out from under mother on ice floe. Wager Bay, Canada Arctic, summer 1996.

Martha Holmes / Female polar bear with cub on ice floe (Ursus maritimus) North West Territories, Canada

Martha Holmes / Polar bear swimming near ice floe. Canada, North West Territories

Martha Holmes / Polar bear swimming. Canada (Ursus maritimus) NW Territories

Martha Holmes / Cape buffalo herd (Synceros caffer caffer) S. Luangwa National Park, Zambia

Martha Holmes / Young orphan chimpanzee (Pan troglodytes) captive, Zambia

Martha Holmes / Sunlit iceberg in field of icebergs with stormy sky, Antarctica

Georgette Douwma / "Seatrek" programme presenters Martha Holmes and Mike de Gruy feeding Butterflyfish off Hawaii, 1991 - BBC NHU television series

Georgette Douwma / Martha Holmes swims with Whale Shark off Hawaii, 1991 on location for BBC NHU television series "Seatrek", Model released

Georgette Douwma / Martha Holmes with Giant Clam during filming of BBC television series 'Seatrek' 1991

Martha Holmes / Doug Allan filming swimming polar bear (Ursus maritimus) from boat in the Canadian Arctic. On location for BBC programme 'Polar Bear Special', May 1996.

Martha Holmes / Aerial cameraman David Baillie and producer Martha Holmes on flight deck of HMS Endurance, standing by helicopter mounted with Gyron (stabilised aerial camera). February 20008. Taken on location for B...

Martha Holmes / Red algae in ice on shore. Antarctic Peninsula. February 2008. Taken on location for BBC tv series 'Life'

Martha Holmes / Aerial view of coast of Antarctic Peninsula. February 2008.

Martha Holmes / Aerial view of coast of Antarctic Peninsula. February 2008. Taken on location for BBC tv series 'Life'

Martha Holmes / Producer Martha Holmes in Royal Navy helicopter. Antarctic Peninsula. February 2008. Taken on location for BBC tv series 'Life'

Martha Holmes / Interior of Royal Navy helicopter showing pilots. Antarctic Peninsula. February 2008. Taken on location for BBC tv series 'Life'

Martha Holmes / 'Yogicam' (vehicle-mounted Cineflex camera) alongside herd of drinking elephants (Loxodontia africana) at edge of swamp. Amboseli, Kenya. December 2007 Taken on location for BBC tv series 'Life'

Martha Holmes / 'Yogicam' (vehicle-mounted Cineflex camera) alongside herd of drinking elephants (Loxodontia africana) at edge of swamp. Amboseli, Kenya. December 2007 Taken on location for BBC tv series 'Life'

Martha Holmes / Lone lime tree (Tilia europaea) covered in snow. Forest of Dean, UK. January.

Martha Holmes / Spotted hyena pack (Crocuta crocuta) eating African buffalo (Syncerus caffer) carcass. Amboseli, Kenya. December 2007. Taken on location for BBC tv series 'Life'

Martha Holmes / Elephant herd (Loxodonta africana) walking, Amboseli, Kenya. December 2007. Taken on location for BBC tv series 'Life'

Martha Holmes / Elephant herd (Loxodonta africana) walking, Amboseli, Kenya. December 2007. Taken on location for BBC tv series 'Life'

Martha Holmes / Simon Werry rigging Cineflex 'yogicam' in back of vehicle. Amboseli, Kenya. December 2007. Taken on location for BBC tv series 'Life'