Wild Alaska Live

Three hundred million salmon are heading in to Alaskan waters right now. It is one of the most spectacular animal migrations on the planet. Liz Bonnin will be live from Katmai National Park, one of the remotest parts of Alaska, where hundreds of brown bears eagerly await the salmon arrival.

Matt Baker will be broadcasting live from Tongass National Forest, the largest temperate rainforest on the planet, on the trail of a mother black bear who is relying on the salmon run to feed her three cubs.

And Steve Backshall will be going live underwater as he attempts to join the salmon for the final hurdle on their spectacular journey. ■

Tomorrow, BBC1, 7pm