Race to Survive: Great Migrations

Zebra Migration Begins (3:41)

Predators Stalk the Heard (2:52)

Walrus Migration - Males (1:56)

Walrus Migration - Females (1:48)

Collision in Walrus Migration (2:21)

Pronghorn Migration Begins (2:27)

Man-Made Perils of Pronghorn Migration Route (2:48)

Natural Obstacles of Pronghorn Migration (1:57)

Zebras Arrive at Makgadikgadi Salt Pans (2:35)

Zebra Mating (1:40)

Zebras' Return Journey (2:07)

Plankton Migration (1:35)

Whale Shark Migration (3:25)

Spectacular Feast in the Rainforest (1:42)

Strangler Fig Tree (2:12)

When the Figs Run Out (2:14)

Walrus Tempers Flare (2:46)

Walruses Leave the Chukchi Sea (1:31)

Stallion Makes Startling Choice (6:34)

Credits: Race to Survive: Great Migrations (0:19)