Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...

Underwater caves off the coast of Sicily offer new clues about the island’s first human inhabitants. They may have arrived by sea, not by land, as previously assumed. Sicily is one of the earliest ...

The Hranicka Abyss is at least 1,325 feet deep, and likely goes down further. — -- A team of explorers believe they have discovered the deepest known underwater cavern the world in eastern Czech ...

Hidden beneath the surface, a pristine underwater cave can preserve traces of vanished worlds with a clarity that dry land rarely matches. In the still water and sealed chambers, sediments, bones, and ...

Cave diving combines the thrill of scuba diving and with the excitement of exploring a cave; it’s a challenging activity even for experienced explorers. At these four sites — some of the most popular ...

A cave diver known for his record-breaking dives and contributions to scientific research has died during an underwater expedition. Divers recovered the body of Brett Hemphill, the 56-year-old ...

Three researchers maneuvered through the darkness of an underwater cave in Japan. It was the same cave off Okinawa Island where a new species of crab with degenerated eyes and a white body had ...

With help from an experienced underwater cave-diving team, researchers have constructed the most complete map to date of the microbial communities living in the submerged labyrinths beneath Mexico's ...