To capture footage of the volcano's molten heart, the aerial team must deal with ferocious winds and clouds of volcanic gas: this is aerial filming at its most extreme. Meanwhile, the cave team is dropped close to the summit.
To film the entire breeding cycle of the Adelie penguin, a team is sent to one of the world's largest colonies at Cape Crozier, Antarctica. Cameraman Mark Smith and director Jeff Wilson spent four months living amongst the penguins.
Follow the crews behind the spectacular shots of a mother polar bear and her twins in the Arctic, and an orca hunt in the Antarctic.
Filming the spectacular return of the Emperor penguins to Antarctica was a key event for the team, but it required operating in the most dangerous of all polar environments: the edge of the sea ice.
Veteran Canadian cameraman Jeff Turner attempted to film Bison Wolves 15 years ago but couldn't keep up with the wolves on the ground. This time he's back with an aerial team, cameraman Mike Kelem and director Chadden Hunter.
Producer Dan Rees led the `Frozen Planet' team on their longest journey in the Arctic to Russia's most remote region: Chukotka, 4,000 miles and 9 time zones east of Moscow.