Access to this video is a benefit for members through PBS Passport.
Up Next
Back to Show
Changing Seas
Toxic Waters
Season 11
Episode 1102
Harmful algal blooms come in many forms, from toxic outbreaks impacting the health of animals and humans, to non-toxic but expansive sargassum mats devastating local economies and tourism. Scientists are working to understand what causes these blooms, how they impact us, and how we can stop them.
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
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.
26:43
Researchers are beginning to understand where turtles go during their “lost years.”
Unlock with PBS Passport
26:54
Scientists conduct research to save the Smalltooth Sawfish.
Unlock with PBS Passport
27:02
Scientists spend a month in the Galapagos Islands to conduct research.
Unlock with PBS Passport
26:54
The world’s largest known aggregation of whale sharks occurs just off the coast of Cancun.
Unlock with PBS Passport
26:48
Discover Crinoids which have been around since before the age of Dinosaurs.
Unlock with PBS Passport
26:46
The Changing Seas team meets with researchers in French Polynesia.
Unlock with PBS Passport
26:46
New research sheds light on the lives of mysterious creatures of the deep.
Unlock with PBS Passport
26:45
Divers from around the country learn how to map shipwrecks.
26:45
Follow one scientist studying coral in Belize.
Unlock with PBS Passport
27:14
Scientists studying the coastal Everglades make some perplexing discoveries.