Witness ancient seas shape life through Earth’s earliest mass extinctions.
Go back hundreds of millions of years to the Ordovician and Devonian, when booming oceans, early reefs, strange predators, and the first steps onto land set the stage for catastrophe. As extinction reshapes the planet, this series reveals how survivors sparked the next wave of evolution, making every episode a deeper look at life’s resilience.
Episode guide
2 episodes- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Frequently asked questions
Yes. Every plan unlocks the full library — including all Curiosity Originals like Ancient Oceans — in up to 4K, ad-free, on all your devices.
Ancient Oceans is a Curiosity Original, exclusive to Curiosity Stream.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.