and it has so far been measured to 1,378 feet deep, or 420 meters below sea level. Blue holes are huge underwater sinkholes ...

Divers and underwater explorers also make the most ... claim to fame as the home of Dean's Blue Hole — one of the deepest blue holes in the world and the site of an annual freediving competition.

An curved arrow pointing right. The 'blue hole' was discovered among the Paracel Islands in the South China Sea. It measured just over 300 metres deep, surpassing the previous record of 202 metres ...

If you're scared of deep holes and the ocean, this is not the sinkhole for you. Taam Ja' Blue Hole can be found in Mexico's Chetumal Bay. It's an underwater sinkhole, known as a "blue hole ...

From a protected cove on Long Island, Dean’s Blue Hole—Earth’s deepest known underwater cave—plunges more than 600 feet into darkness. The entry to South Passage is decorated by ...

Canadians Steven Haining and Ciara Antoski, with help from U.S. diving and safety expert Wayne Fryman, originally set the record for the deepest underwater model photo shoot at a depth of 21 feet ...

The Axial Seamount, an underwater volcano located about 300 miles off the coast of Oregon, is displaying behavior that ...

Together with model Ciara Antowski and a team of safety experts, Haining has broken the Guinness Book of World Records for the deepest underwater photoshoot for the third time. The photoshoot ...

Canadian photographer set a new Guinness World Record for the deepest underwater photoshoot at 50 meters on the Hydro Atlantic shipwreck. A Canadian photographer has achieved a remarkable feat by ...

Norway has revealed plans to build the world’s longest and deepest underwater tunnel to cut 11 hours from the journey on its E39 coastal highway. The 16.5-mile tunnel, known as Rogfast ...