Back to Show
Changing Seas
Saving Sawfish - Trailer
Strange and prehistoric-looking, Smalltooth Sawfish were once coveted by anglers as popular trophy fish. But habitat loss and overfishing have greatly reduced the animals’ range and landed them on the endangered species list in 2003.
Support Provided By
Unlock with PBS Passport
26:42
Scientists study tarpon, bonefish and permit to better understand their behaviors.
Unlock with PBS Passport
26:43
Modern technology is making it possible to correlate dolphin sounds and behavior.
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
Visit the remote Pacific, the islands of Maug - a natural laboratory for scientists.
Unlock with PBS Passport
26:43
Some scientists are suggesting that ctenophores are the oldest sea animals.