This incredible submerged cave network is the longest of its kind in the world and plays a vital role in the region.

The longest known underwater cave in the world is even longer than we thought. As of the start of this year, cave divers have ...

The record setting Rogfast project aims to connect islands and mainland Norway nearly 1,300 feet below the sea, with crews ...

Getting enough oxygen in the water can be hard work. While fish and many other aquatic animals take air directly from the water through gills, other animals find ingenious ways to drag air bubbles ...

If you’ve ever snorkeled in the ocean, you’ve likely been amazed by the stunning sea life—vibrant fish weaving through unique plants in a hidden realm waiting to be explored. It turns out our dogs ...

Yesterday (Sunday, January 5), Rüdiger Koch set a new world record for the longest continuous stay below the water in an underwater room. The aerospace engineer spent 101 days under the Caribbean Sea ...

Jan. 10 (UPI) --An Australian freediver went for a 370-foot, 2-inch stroll at the bottom of a pool to break the Guinness World Record for the longest underwater walk with one breath (female). Amber ...

Scientists are predicting that a mile-long volcano off the U.S. West Coast will erupt this year. The Axial Seamount, an underwater volcano located about 300 miles off the coast of Oregon, is ...

Mexico's Yucatán Peninsula hides Sistema Ox Bel Ha, the world's longest explored underwater cave system, stretching over 524 ...