Frozen Planet II

BBC1, today, 8pm

In 2011, Frozen Planet gave viewers an insight into life at the Poles.

Now, David Attenborough and the team are back with six new films.Tonight’s opening edition begins in the most hostile place on Earth – Antarctica.

While emperor penguin chicks must find their own way across the treacherous sea ice, killer whales have learnt to generate their own waves, washing the seals off their ice floes.

In the north is the Arctic Ocean, and living here is the hooded seal, one of the most peculiar animals on Earth. Males have inflatable noses producing a bright red balloon out of their nostrils!