Easy prey
Thin ice leaves ringed seals vulnerable to predators.
Wildlife
Thin ice
Frozen Planet is a landmark series that takes you on the ultimate polar expedition across the great frozen wildernesses of the Arctic and Antarctic.
In the final episode of Frozen Planet, Sir David Attenborough journeys to both poles to investigate the effects of rising temperatures on the ice, its peoples and the wildlife. The disappearing sea ice means there is less hunting ground for polar bears. There is also a shift in penguin populations, as ice-loving Adelies are replaced by the more temperature loving gentoos.
Narrated by Sir David Attenborough, the story concludes with On Thin Ice now available on iPlayer.
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Changing times
The transformation being seen at the poles will be felt far and wide.
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Moving out
Ice-loving Adelie penguins are on the decline.
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Shrinking glaciers
Dr Iain Stewart describes how the world's glaciers are retreating.
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The albedo effect
The Earth's ice plays an important role in controlling the climate.
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Glacial retreat
Glaciers photographed by Ernest Shackleton are now in decline.
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Bleak future
Disappearing sea ice is endangering polar bears.
Explore:
Video collections
Attenborough's frozen planet
Frozen Planet is Sir David Attenborough's latest exploration into the remote and isolated polar environments.
More collections
Take a trip through the natural world with our themed collections of video clips from the natural history archive.
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Deadly dinosaurs
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Baby Animals
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Seaside spectacular
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Nature's record breakers
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Garden wildlife
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Jonathan Scott: a wild life in Africa
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David Attenborough's Madagascar
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Life in slow motion
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Garden birds
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George's marvellous minibeasts
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Wild autumn
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Timelapse photography: speeding up life
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Going, going, gone
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Brilliant bees
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Wildlife wind-ups
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Year of the Tiger
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What on Earth...? 2009
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The wildlife of Life
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David Attenborough's favourite moments
What's new?
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Wild turkey
new clip
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Emperor penguin
new news story
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Polar bear
new news story
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Woolly bear moths
new editorial
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Ringed seal
new clip
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Narwhal
new sound
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Bowhead whale
new sound
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Short-tailed shearwater
new sound
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Fungi
new news story
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Thick-billed guillemot
new sound
The Earth
Explore our dynamic planet with stunning video clips of volcanoes, earthquakes and more.
Most popular video clips
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Bird of paradise Birds of paradise exhibit their bizarre courting techniques in the jungle.
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Freeze-thaw caterpillars The woolly bear caterpillar takes 14 years to become an adult.
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Panda cub First footage of a new born panda and its mother in their cave den.
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Searching for seals After a five month fast, a polar bear mother must eat to ensure her cubs' milk supply.
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Penguins can fly Female emperor penguins returning from a summer at sea are sleek and fat.
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