Follow a freshwater cave diver. A man knows hundreds of lemon sharks by number. Visit one of the most advanced virtual reality training simulators.
SeaTek explores the art of taking a giant 300-foot ship from shore to sea, where millions of dollars and thousands of man-hours hang in the balance.
Diving in an intricate cave system in Florida, scientists are finding a treasure trove of ancient bones from the Mastodon's era.
Travel with famed underwater cinematographer Al Giddings in a specially equipped photo-sub to shed a rare light on the Titanic!
Travel on a new, powerful class of icebreaker as it attempts a historical run at the North Pole. Visit the world's only full-time underwater colony.
A spear fisherman can dive over one hundred feet deep and stay down for over two minutes on one breath of air! And the world's first invisible boat!
Gerald Kooyman and his sons study the incredible diving feats of the Emperor Penguin under the ice of Antarctica.
How does a fish that lives at 200 feet of pressure survive the journey to the surface and into your tank?
A photo shoot underwater where the model is co-starring with a pack of sharks. NASA tests a new underwater robot in the frigid waters of Antarctica.
Hawaii's next island, Loihi, is slowly building to the ocean's surface - and it should emerge in about 50,000 years.
There's a high stakes "gold rush" going on in the middle of the Pacific Ocean. It's there that a potentially billion dollar mineral field exists.
Tiny algae called Marine Snow located under the ice in Antarctica may hold the key to understanding the food chain for a huge part of the ocean.
It takes a special breed of adventurer and special equipment to ice dive. Dive with a New Zealand team under ice too thick to crack!
Scott Carpenter was an Astronaut and an Aquanaut. His adventures continue at the world's only underwater camp where people can live beneath the waves.
We'll dive a tough wreck site in New Zealand with a new breed of treasure hunter.
Underwater welding is the key to maintaining pipelines, bridges and ship repairs. It is colorful, but extremely dangerous work!
A geological expedition in the Gulf of Mexico discovers evidence that the comet that wiped out the dinosaurs landed here.