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 June 10, 2019 / Modified jun 19, 2019 9:56 p.m.

When Whales Walked: Journeys In Deep Time

Meet the ancient ancestors of four iconic creatures.

Meet the ancient ancestors of four iconic creatures: crocodiles, birds, whales and elephants. Join top scientists on a global adventure as they follow clues from the fossil record and use 21st century technology to make exciting new discoveries.

When Whales Walked: Journeys In Deep Time, Wednesday at 9 p.m. on PBS 6.

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