As the Arctic summer fades, the sea swallow and the humpback whale share the challenge of an epic voyage.

Follow the animals on their perilous adventure, as they face drifting fishing nets, lurking killer whales, relentless rain and fierce, icy winds.

With breathtaking illustrations by Gerry Turley, travel across the sky and sea to experience one of the longest and most dangerous animal migrations.

Catherine Barr, illustrated by Gerry Turley