Steve Backshall investigates Canada's remarkable coastal forest to reveal why this ancient sylvan environment is not only home to some of the largest trees on Earth, but also some of the greatest aggregations of top predators in North America. He untangles the complex relationships between the seasons, the landscape and the wildlife to discover what might be fueling this forest's prolific productivity and supporting eagles, bears and wolves. In this complex coastal system, the secret to success comes in a remarkable annual event. A BBC Production.

Originally released by BBC Worldwide Learning, 2012. Streaming video file encoded with permission for digital streaming by Infobase on October 03, 2015.