Skip to main content
Donate
Access to this video is a benefit for members through PBS Passport.
Learn More
Member Sign-In
Learn More
Member Sign-In

Up Next

Corals in Crisis

Corals in Crisis

Season 11 Episode 1103
26:42
Mystery of the Humpback Whale Song

Mystery of the Humpback Whale Song

Season 11 Episode 1104
26:42
Florida’s Blue Holes: Oases in the Sea

Florida’s Blue Holes: Oases in the Sea

Season 12 Episode 1201
26:42
A Decade after Deepwater

A Decade after Deepwater

Season 12 Episode 1202
26:42
Peru’s Desert Penguins

Peru’s Desert Penguins

Season 12 Episode 1203
26:42
American Samoa’s Resilient Coral Reefs

American Samoa’s Resilient Coral Reefs

Season 12 Episode 1204
26:53
Recreational Shark Fishing: Collaborating for Conservation

Recreational Shark Fishing: Collaborating for Conservation

Season 13 Episode 1301
26:42
At the Water’s Edge: The Salt Marsh

At the Water’s Edge: The Salt Marsh

Season 13 Episode 1302
26:42
Alvin: Pioneer of the Deep

Alvin: Pioneer of the Deep

Season 13 Episode 1303
26:47
Habitats: The Key to Florida’s Fisheries

Habitats: The Key to Florida’s Fisheries

Season 13 Episode 1304
26:47
Vanishing Whales

Vanishing Whales

Season 14 Episode 1401
26:42
Humpback Health

Humpback Health

Season 14 Episode 1402
26:42
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.
Stream on your TV
Support Provided By
American Samoa’s Resilient Coral Reefs
Unlock with PBS Passport
26:53
Season 12 Episode 1204
American Samoa’s Resilient Coral Reefs
Scientists study what makes certain corals more resilient than others.
Peru’s Desert Penguins
Unlock with PBS Passport
26:42
Season 12 Episode 1203
Peru’s Desert Penguins
Scientists monitor penguin populations and study the animals’ interaction.
A Decade after Deepwater
Unlock with PBS Passport
26:42
Season 12 Episode 1202
A Decade after Deepwater
Scientists study the devastating impacts of the Deepwater Horizon oil rig disaster.
Florida’s Blue Holes: Oases in the Sea
Unlock with PBS Passport
26:42
Season 12 Episode 1201
Florida’s Blue Holes: Oases in the Sea
Scientists set out to uncover the mysteries of blue holes.
Mystery of the Humpback Whale Song
Unlock with PBS Passport
26:42
Season 11 Episode 1104
Mystery of the Humpback Whale Song
Experts study the purpose of a male humpback whale's song.
Corals in Crisis
Unlock with PBS Passport
26:42
Season 11 Episode 1103
Corals in Crisis
Stony Coral Tissue Loss Disease is devastating Florida’s fragile coral reef.
The Cordell Bank: A National Treasure
Unlock with PBS Passport
26:42
Season 11 Episode 1101
The Cordell Bank: A National Treasure
Discover the Cordell Bank, a magical underwater island few people have ever heard of.
Fishing the Flats for Science
Unlock with PBS Passport
26:42
Season 10 Episode 1004
Fishing the Flats for Science
Scientists study tarpon, bonefish and permit to better understand their behaviors.
Lords of the Wetlands
Unlock with PBS Passport
26:42
Season 10 Episode 1003
Lords of the Wetlands
Scientists work to save crocodiles through research and conservation.
Cryptic Critters
Unlock with PBS Passport
26:42
Season 10 Episode 1002
Cryptic Critters
Deep underwater, on a shipwreck near Key West, lives a tiny potential new threat.
Dolphins: Breaking the Code
Unlock with PBS Passport
26:43
Season 10 Episode 1001
Dolphins: Breaking the Code
Modern technology is making it possible to correlate dolphin sounds and behavior.
Majestic Mantas
Unlock with PBS Passport
27:13
Season 9 Episode 904
Majestic Mantas
Scientists experimant to see if giant manta rays are impacted negatively by microplastics.
Show more
Active loading indicator