JACKSONVILLE, Fla. — Divers working with the Florida Department of Transportation are plunging into the St. Johns River over the next few days to inspect the underwater structures of the Hart Bridge.

Living beneath the waves has long captured the imagination of dreamers, designers and explorers, inspired by tales like Atlantis. Today, with rising sea levels and a growing curiosity about what lies ...

Researchers studying an underwater city in Italy say they have found an ancient mosaic floor that was once the base of a Roman villa, a discovery that the local mayor called "stupendous." The ...

Across the world’s continental shelves, scientists are racing to reconstruct an ancient landscape that once stretched where ...

Welcome to our video on the science and engineering behind building underwater structures. Engineers have been building structures underwater for centuries, but the challenges of working in the marine ...

Does an mini-Stonehenge stand underwater in Grand Traverse Bay, part of Lake Michigan? In 2007, looking for shipwrecks in this area, which was a busy 19th- and 20th-century maritime trade route, Mark ...

In 1995, divers first noticed a group of bizarre sandy "crop circles" on the seabed around Amami Oshima Island, southwest ...

A team of researchers has recovered the deepest sample ever taken of the Earth’s mantle from a section of seafloor in the Atlantic Ocean. At more than three-quarters of a mile in continuous length, ...

A transparent goby fish drifted through the darkness, its skeleton visible through paper-thin skin. Nearby, a sea slug wore ...

JACKSONVILLE, Fla. — Divers working with the Florida Department of Transportation are plunging into the St. Johns River over the next few days to inspect the underwater structures of the Hart Bridge.