- Series 1 (12)
Autumn means dramatic battles and epic journeys. Time is running out - the Arctic Ocean is freezing over. Polar bears gather on the Arctic coast as they wait for the return of the ice. Meanwhile two thousand beluga whales head for one special estuary, to thrash their snow-white bodies against the gravel and exfoliate. Inland, the tundra undergoes a dramatic transformation from green to fiery red.