The longest known underwater cave in the world is even longer than we thought. As of the start of this year, cave divers have mapped 524 kilometers (325.6 miles) of a subterranean water 'web' near ...

Hidden beneath the water’s surface, these caves offer a unique beauty that few have the chance to witness. Imagine swimming in crystal-clear waters, surrounded by dramatic rock formations, and ...

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 ...

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 ...

The deepest caves on Earth are still being studied by scientists. They are unique environments created over millions of years ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Underwater caves off the coast of Sicily offer new clues about the island’s first human inhabitants. They may have arrived by sea, ...

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 ...

The eastern Yucatán Peninsula study region is pierced by vast interconnected flooded tunnels, that function as underground rivers. The groundwater is the only source of potable water for the whole ...