Access to this video is a benefit for members through PBS Passport.
Back to Show
Watch Preview
Changing Seas
Maug’s Caldera: A Natural Laboratory
Season 8
Episode 803
Visit the remote Pacific, the islands of Maug. Formed by an ancient volcano, shallow hydrothermal vents are found close to coral reefs inside the submerged caldera. These vents emit levels of CO2 that can be expected in the world’s oceans by the end of the century, making these waters a natural laboratory for scientists studying the impacts of ocean acidification on coral reefs.
Support Provided By
Unlock with PBS Passport
27:13
Scientists experimant to see if giant manta rays are impacted negatively by microplastics.
Unlock with PBS Passport
27:13
Changes to the ocean environment affect the way carbon is cycled through the seas.
Unlock with PBS Passport
27:13
Lake Okeechobee, once the blue heart of Florida, now has putrid mats of blue green algae.
Unlock with PBS Passport
26:43
Some scientists are suggesting that ctenophores are the oldest sea animals.
Unlock with PBS Passport
26:44
Researchers provide data necessary to protect fish populations from further decline.
Unlock with PBS Passport
26:42
Researchers study what impact ecotourism might have on southern stingrays.
Unlock with PBS Passport
26:43
Researchers are beginning to understand where turtles go during their “lost years.”