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Equally matched

Duration: 02:46

Penguins can be difficult to catch in sea and on land.

Available since: Tue 25 Oct 2011

This clip is from

Frozen Planet To the Ends of the Earth

1/7 At the North Pole, the sun returns after six months of darkness.

First broadcast: 26 Oct 2011

Image for To the Ends of the Earth Not currently available on BBC iPlayer

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