Critical federal funds have been eliminated for public media. Your donation today keeps us strong.

DONATE NOW

KRMU in Durango, CO is having technical difficulty due to utility power issues at our transmission site. We're working to restore full functionality. Thank you for your patience and understanding!

Stream live and on-demand content now on our new app:
RMPBS+
NOVA show's poster

When Whales Could Walk

NOVA brings you stories from the frontlines of science and engineering, answering the big questions of today and tomorrow, from how our ancestors lived, to whether parallel universes exist, to how technology will transform our lives. Visit the official website to watch full-length documentaries, or explore our world through short-form video, on our digital publication NOVA Next.

When Whales Could Walk

Season 51 Episode 1 | 53m 31s | CC

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.

NOVA

Watch more episodes

See more
See more
Original production funding for “When Whales Could Walk” is provided by the Canada Media Fund.