Nigel starts his journey following wildlife in the Canadian Arctic.
Nigel visits arctic foxes and their cubs; beluga whales arrive in the river.
In Igloolik, Nunavut, Nigel dives from an iceberg and swims with walruses; bowhead whales; an update on the nine arctic fox cubs.
In Churchill, Nigel gets up close with polar bears.
Highlights of the Arctic year; how climate change can affect animals.
