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Three dolphins swimming in the sea.

Changing Seas

All episodes with PBS Passport

Changing Seas

All episodes with PBS Passport

Produced by South Florida PBS in Miami, Florida, "Changing Seas" gives viewers a fish-eye view of life in the deep blue. Join scientists as they study earth’s last frontier and discover the mysteries of our liquid planet.

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Super Grouper - Trailer
1:32
After being fished to near extinction, Goliath Groupers are making a comeback in Florida.
The Fate of Carbon - Trailer
3:45
Scientists study how increased levels of CO2 impact how carbon cycles through the seas.
Toxic Algae: Complex Sources and Solutions - Trailer
3:02
Experts study the cause and effects of Florida’s toxic algal blooms.
Maug’s Caldera: A Natural Laboratory - Trailer
4:48
The Maug Islands are a natural laboratory for scientists studying ocean acidification.
Sponges: Oldest Creatures in the Sea? - Trailer
3:08
Are sponges the oldest creatures in the sea? DNA research has cast doubt on that theory.
The Secret Sex Life of Fish - Trailer
2:35
Discover the unique ways some fish species change sex during their lifetime.
Billfish: Battle on the Line? - Trailer
2:17
Researchers study billfish in the eastern Pacific to protect the animals from overfishing.
Saving Sawfish - Trailer
2:17
Scientists conduct research in South Florida to save the endangered Smalltooth Sawfish.
Reefs of Rangiroa
2:51
Scientists are on a six-year mission to study remote coral reefs around the world.
Creatures of the Deep - Trailer
2:02
Researchers study the fishes that live in the deep, cold waters of the Gulf of Mexico.
Coral Hybrids - Trailer
2:33
A scientist studies coral hybrids to see if they are hardier than their parents.
Tracking Tigers - Trailer
1:44
Scientists use satellite tags and DNA forensic tools to study the ultimate apex predator.
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