Science and Nature

When Whales Walked: Journeys in Deep Time

Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists from around the world on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

When Whales Walked: Journeys in Deep Time

1h 54m

Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

Episodes

  • When Whales Walked: Journeys in Deep Time: asset-mezzanine-16x9

    When Whales Walked: Journeys in Deep Time

    1h 54m

    Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

Extras + Features

  • Walking Whale Ancestor: asset-mezzanine-16x9

    Walking Whale Ancestor

    3m 12s

    Blue whales are the biggest creatures to have ever lived on Earth. Measuring up to a hundred feet long and 200 tons in weight, they have a heart the size of a small car. But how did they get so big? Surprisingly, whales weren’t always gargantuan water-dwelling mammals. In fact, their ancestor Pakicetus, was the size of dog and walked on land.

  • Crocodile Ancestors: asset-mezzanine-16x9

    Crocodile Ancestors

    2m 59s

    Scientists are now discovering the earliest ancient crocodiles by tracing one branch of the vast tree of life 230 million years into the geologic period called the Triassic. And they looked nothing like the crocs alive today.

  • Birds Are Living Dinosaurs: asset-mezzanine-16x9

    Birds Are Living Dinosaurs

    4m 33s

    Birds have colonized every environment on Earth, and they come in an astonishing variety of shapes, colors and sizes. There are more than 10,000 species of bird alive today, so how did they come to be everywhere and so diverse? After discovering an assortment of fossils, scientists have concluded that birds must have evolved from dinosaurs.

  • When Whales Walked: Journeys in Deep Time | Trailer: asset-mezzanine-16x9

    When Whales Walked: Journeys in Deep Time | Trailer

    2m 21s

    Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

  • When Whales Walked: Journeys in Deep Time | Preview: asset-mezzanine-16x9

    When Whales Walked: Journeys in Deep Time | Preview

    30s

    Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists from around the world on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

  • When Whales Walked: Journeys in Deep Time | Teaser: asset-mezzanine-16x9

    When Whales Walked: Journeys in Deep Time | Teaser

    2m 10s

    Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

  • Empire of Elephants: asset-mezzanine-16x9

    Empire of Elephants

    4m 46s

    Today there are only three species of elephant, but 16 million years ago there were dozens. What happened to all those species? Over many millions of years, due to climate change and predation pressure from humans, elephants waned until today, where there are only three species left.

Schedule

WETA Passport

Stream tens of thousands of hours of your PBS and local favorites with WETA Passport whenever and wherever you want. Catch up on a single episode or binge-watch full seasons before they air on TV.