Extreme Journeys Sneak Peek

Travel to Ascension Island, an isolated volcanic island surrounded by the vast expanse of the Atlantic Ocean, and watch as tiny green turtles take the first steps of their 1,400-mile-long journey from the beach where they've just hatched to their feeding grounds in the waters off South America. Don't miss all-new original 'Planet Earth' specials, premiering on Sundays at 10/9c only on BBC America!

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