Ever wondered how the Frozen Planet team go about filming in the polar regions, dodging polar bears, killer whales and freezing conditions?
As the series comes to an end, Hayley's been to find out how the crew managed to do it.
Frozen Planet has given us an incredible insight into the last great wilderness on earth - the polar regions.
The programme's shown us the Arctic and Antarctic as they have never been seen before - and may never be seen again.
Frozen Planet's last episode is on BBC One on Wednesday night at 9pm, and repeated on Sunday 11 December at 3.55pm on BBC One