Access to this video is a benefit for members through PBS Passport.
Back to Show
Watch Preview
Changing Seas
Alien Invaders
Season 3
Episode 301
In the waters of the western Atlantic and Caribbean, a voracious alien predator has taken hold. Native to the Indo-Pacific, the invasive lionfish is a major threat to biodiversity and the health of already stressed coral reef ecosystems.
Support Provided By
Unlock with PBS Passport
26:48
Examine the important role seagrasses and mangroves play in the ocean’s web of life.
Unlock with PBS Passport
26:51
The Changing Seas crew shadows a team of research divers in Dry Tortugas National Park.
26:45
Scientists develop sustainable aquaculture methods to take the pressure off wild fish.
26:46
Scientists scan the ocean floor to find deep sea corals threatened by bottom trawling.
26:49
Scientists at the world’s only underwater lab study the impacts of ocean acidification.
26:54
After being fished to near extinction, Goliath Groupers are making a comeback in Florida.