Previews + Extras
When Whales Could Walk Preview
S51 E1 - 30s
A spectacular fossil graveyard reveals a 43-million-year-old whale that had four legs and could walk. Follow scientists as they search for new clues to how mammals moved from land into the sea to become the largest animals on Earth.
The whale that could walk
S51 E1 - 2m 48s
A small furry carnivore that lived both on land and sea is the ancestor of modern whales.
Ancient whale fossils found in the desert
S51 E1 - 2m 10s
This part of the Sahara Desert is the resting place of some of the earliest whales ever found. These fossils may hold the key to how whales evolved.
Similar Shows
The Brain-Gut Connection with Dr. Emeran Mayer
Science and Nature
SciGirls Stories: Black Women in STEM
Science and Nature
Insecta: Science that Stings
Science and Nature
Human: The World Within
Science and Nature
Evolution Earth
Science and Nature
Inside Nature's Giants
Science and Nature
The Great Polar Bear Feast
Science and Nature
Gross Science
Science and Nature
Rivers of Life
Science and Nature
Great Yellowstone Thaw
Science and Nature
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.