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Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:31
Madagascar

Island of Marvels

Madagascar, the world's oldest island, broke off from Africa and India and has been on its own for more than 70 million years. In splendid isolation, it has evolved its very own wildlife — more than 80 percent of it is found nowhere else. And that wildlife is quite extraordinary. Uncover this island's most bizarre and dramatic places, and the unique wildlife that has made its home in each, thanks to the geology and isolation of this Alice-in-Wonderland world.

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