Access to this video is a benefit for members through PBS Passport.
Back to Show
Watch Preview
Changing Seas
Tracking Tigers
Season 4
Episode 401
Tiger sharks are the ultimate apex predators. Scientists use satellite tags and DNA forensic tools to better understand the migrations of this magnificent species and to investigate the impacts of the world shark fin trade.
Support Provided By
Unlock with PBS Passport
29:33
Scientists work to identify and link a devastating coral disease to a human pathogen.
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.