The unique oceanic conditions of the Galápagos Islands serve as a perfect natural laboratory to study how climate change may impact corals in the future. A coproduction with the Khaled bin Sultan Living Oceans Foundation.

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.

In the deep, dark waters off the coast of Roatan, Honduras, strange flowerlike animals flourish. These sea lilies and feather stars, known as Crinoids, have been around in various forms since before the age of dinosaurs.

Each summer, the world’s largest known aggregation of whale sharks occurs just off the coast of Cancun, Mexico. Hundreds of these gentle giants come to the area to feed on plankton, giving experts the opportunity to learn more about the largest fish in the sea.

Scientists with the Global Reef Expedition are on a six-year mission to study remote coral reefs around the world. Organized by the Khaled bin Sultan Living Oceans Foundation, the expedition kicked off in 2011, with plans to conduct research in the Atlantic, Pacific and Indian Oceans.

A coproduction with the Khaled bin Sultan Living Oceans Foundation.

In the cold, deep waters of the Gulf of Mexico, little-known animals spend their entire lives in near darkness, far removed from our human world. Until now, little research has been conducted on these creatures of the deep, keeping much of their lives a mystery.

The oceans are a graveyard of man’s seafaring adventures. Today, underwater archaeologists are scouring the seafloor for clues to our maritime past.

Once a common sight in the Caribbean and Florida, Elkhorn and Staghorn corals are now listed as threatened on the U.S. Endangered Species list. But while these corals have declined in recent years, their hybrid appears to be increasing in parts of the region.

Scientists studying the coastal Everglades have made some perplexing discoveries. Bull sharks are living upstream where alligators should thrive, and gators are swimming out to the ocean to feed. A coproduction with Symbio Studios.

During the winter full moons, Nassau Grouper gather in large numbers to spawn. Most of the known spawning sites have been fished out, but the Cayman Islands are home to the last great reproductive population of this endangered species.

On coral reefs, microorganisms are copious creatures. Throughout Florida, scientists painstakingly work to identify key players within this microbial community and directly link a devastating coral disease to a human pathogen.

Off Key West, in the Florida Keys National Marine Sanctuary, lies the world's second largest intentionally sunk shipwreck, the USNS General Hoyt S. Vandenberg. This artificial reef is now attracting fish, fishermen and divers.

They are an ancient species of flowering plants that grow submerged in all of the world’s oceans. Seagrasses link offshore coral reefs with coastal mangrove forests. Today, these prairies of the sea, along with mangroves, are declining globally. Scientists fear the diminishing vegetation could result in an ecosystem collapse from the bottom of the food chain all the way to the top.

Bottlenose dolphins are a beloved Florida icon, but recent studies show disturbing signs of immune system dysfunction and disease plaguing this charismatic mammal.

How do you count two fish, three fish or even a school of fish? In Dry Tortugas National Park, located 70 miles from Key West, Florida, a group of scientists have joined forces to conduct a massive fish census.