6 episodes
1. The Great Melt
1. The Great Melt
Polar bears struggle as ice sheets melt, but foxes thrive.
50min
May 28, 2009
2. The Great Salmon Run
2. The Great Salmon Run
Grizzly bears and forest wolves battle for salmon in Canada.
50min
Feb 17, 2009
3. The Great Migration
3. The Great Migration
Two million wildebeest, zebra, and more graze the Serengeti.
50min
May 29, 2009
4. The Great Tide
4. The Great Tide
In South Africa, the Sardine Run attracts ocean predators.
50min
May 29, 2009
5. The Great Flood
5. The Great Flood
Dramatic flooding in Botswana draws millions of animals.
50min
Mar 10, 2009
6. The Great Feast
6. The Great Feast
Alaska's coast in spring is home to an explosion of life.
50min
Mar 17, 2009