Changing Seas

Changing Seas

The documentary series offers an unprecedented look at how oceanographers and experts study earth's vast underwater wilderness while shedding light on how over-fishing, global climate change, and pollution threaten ocean resources.

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All Past Episodes

Fishing the Flats for Science

26:47 | #1004 | TV-G

Scientists are studying flats fishing to better understand movements, habitat, and spawning behaviors.

Lords of the Wetlands

27:46 | #1003 | TV-G

Dedicated scientists and conservationists are working to save crocodiles in Jamaica.

Cryptic Critters

26:46 | #1002 | TV-G

Researchers investigate a new species deep underwater on a shipwreck near Key West, Florida.

Dolphins: Breaking the Code

26:47 | #1001 | TV-G

Modern technology is bringing Dr. Denise L. Herzing closer to decoding dolphin communication.

Beneath the Bridge

26:46 | #804 | TV-G

The Blue Heron Bridge in Riviera Beach, Florida is known as one of the best shore dives in the United States. Underwater photographers are documenting what lives beneath the bridge, and a scientist is studying how two species of octopus co-exist there.

Maug's Caldera: A Natural Laboratory A Co-Production with Open Boat Films

26:46 | #803 | TV-G

Scientists study the impacts of ocean acidification on coral reefs on the islands of Maug.

Manatees: Conserving a Marine Mammal

26:46 | #802 | TV-G

Every winter, hundreds of manatees aggregate at Crystal River, Florida. This sanctuary is also a treasure for scientists, who take advantage of these manatee gatherings to study them. From decades of visual ID studies to the most cutting-edge DNA research, experts hope that science will help conserve this beloved marine mammal.

Sponges: Oldest Creatures in the Sea?

26:46 | #801 | TV-G

Recent DNA research has cast doubt on the theory that sponges were the first animals to branch off the "Animal Tree of Life," a kind of family tree for all living and extinct animals on earth.

The Secret Sex Life of Fish

26:46 | #704 | TV-G

Most people are familiar with the pretty tropical fish found in aquariums, but few realize that some of these animals are capable of changing sex.

Billfish: Battle on the Line

26:46 | #703 | TV-G

Commercial fishing operations impact sailfish and marlin in the eastern tropical Pacific.

Grand Cayman's Famous Stingrays

26:46 | #702 | TV-G

The impact that ecotourism in the Grand Cayman's North Sound might have on wild fish is explored.

Sea Turtles: The Lost Years

26:46 | #701 | TV-G

As technology advances researchers are beginning to learn where sea turtles go after they hatch.

Reefs of Rangiroa

26:46 | #504 | TV-G

Researchers in French Polynesia conduct extensive habitat mapping to create a sea floor atlas. Experts also assess the health of the reefs to compare and contrast human impacts on reef systems over a large geographical area.

Sunken Stories

26:46 | #502 | TV-G

In the Florida Keys, divers from around the country are learning how to map sunken shipwrecks.

Coral Hybrids

26:46 | #501 | TV-G

A scientist in Belize sheds light on Fused Staghorn, a hybrid of Elkhorn and Staghorn corals.

After the Spill

26:46 | #304 | TV-G

Oceanographers continue to study the long term effects last year's oil spill in the Gulf of Mexico.

Prescription: Oceans

26:46 | #303 | TV-G

In Florida, a group of scientists are testing sea sponges for their potential anti-cancer properties. These and other marine invertebrates may hold the key to unlocking the secrets of our own biology.

Reef Revival

26:46 | #302 | TV-G

In the emerging science of coral reef restoration, marine biologists and resource managers are discovering naturally occurring mechanisms that promote coral growth and restore ecological balance in these gardens of the sea.

Alien Invaders

26:46 | #301 | TV-G

In the waters of the western Atlantic and Caribbean, a voracious alien predator has taken hold. Native to the Indo-Pacific, the invasive lionfish is a major threat to biodiversity and the health of already stressed coral reef ecosystems.

Majestic Mantas

26:46 | #904 | TV-G

The remote Revillagegdo Archipelago off Mexico's Pacific coast is a hotspot for giant mantas.

The Fate of Carbon

26:46 | #903 | TV-G

Additional CO2 is impacting sensitive ecosystems through a process called ocean acidification.

Toxic Algae: Complex Sources and Solutions

26:46 | #902 | TV-G

Scientists think water pollution is to blame for toxic algae found in Florida's Lake Okeechobee.

The Future of Seafood

26:46 | #901 | TV-G

One way to increase fish production in a sustainable way is to move aquaculture operations offshore.

Creatures of the Deep

26:46 | #503 | TV-G

Little-known animals spend their entire lives in the cold, deep waters of the Gulf of Mexico.

Saving Sawfish

26:46 | #604 | TV-G

Scientists conduct research in Florida to save endangered, prehistoric-looking Smalltooth Sawfish.

Galapagos: Windows Into The Future

26:46 | #603 | TV-G

Scientists visit the Galapagos Islands to conduct research as part of the Global Reef Expedition.

Biggest Fish in the Sea

26:46 | #602 | TV-G

The world's largest aggregation of whale sharks occurs off the coast of Cancun, Mexico each summer.

Living Fossils

26:46 | #601 | TV-G

Experts descend into the deep to study strange sea lilies and feather stars, known as Crinoids.

Coastal Carnivores

26:46 | #404 | TV-G

Scientists studying the coastal Everglades make perplexing discoveries about bull sharks and alligators.

Grouper Moon

26:46 | #403 | TV-G

The Cayman Islands are home to the last great reproductive population of endangered Nassau grouper.

Mysterious Microbes

26:47 | #402 | TV-G

Scientists work to directly link a devastating coral reef disease to a human pathogen in Florida.

Tracking Tigers

26:45 | #401 | TV-G

Scientists use satellite tags and DNA forensic tools to understand the migrations of tiger sharks.

Sinking the Vandenberg

26:46 | #204 | TV-G

Laid to rest in the Florida Keys National Marine Sanctuary, the USNS General Hoyt S. Vandenberg is the world's second largest intentionally sunk shipwreck. In her last mission as an artificial reef, this massive ship is already attracting a variety of fish and other marine life. Now, natural resources managers are trying to determine what impact this artificial reef has on fish populations and the health of the surrounding natural reefs.

Seagrasses and Mangroves

26:46 | #203 | TV-G

A look at the work of experts to restore Florida's important mangroves and seagrasses.

Sentinels of the Seas

26:46 | #202 | TV-G

An in-depth look at the health status of Florida's wild bottlenose dolphins.

No Fish Left Uncounted

26:46 | #201 | TV-G

In Dry Tortugas National Park, located 70 miles from Key West, Fla., a group of scientists have joined forces to conduct a massive fish census. In this unprecedented collaboration, experts from four different agencies unite to count and analyze fish data from select sites.

Farming the Sea

26:46 | #104 | TV-G

In the deep waters off Florida's Atlantic coast grow magnificent structures, capable of reaching 300 feet in height. These are the corals of the deep sea. Rich in biodiversity, this mysterious underwater kingdom is threatened by destructive fishing practices such as bottom trawling. However, a recently proposed 23,000 square-mile marine protected area could save these fragile reefs from ruin.

Corals of the Deep

26:46 | #103 | TV-G

An ever-growing demand for fresh seafood has pushed wild stocks around the world to the brink. Aquaculture is one alternative to meet the increasing need for fish and crustaceans. Meet experts who produce fish for food production and to replenish depleted wild populations.

Mission to Inner Space

26:46 | #102 | TV-G

A look at NOAA's Aquarius Reef Base, the only undersea research station operating in the world today. Located just three and a half miles offshore from Key Largo, Fla., at a depth of 60 feet, aquanauts spend ten day missions living and working on the seafloor.

Super Grouper

26:46 | #101 | TV-G

At a time when large fish are rapidly disappearing from the world's oceans, one giant is making a comeback in Florida.

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