From a protected cove on Long Island, Dean’s Blue Hole—Earth’s deepest known underwater cave—plunges more than ... of the inland blue holes—deep, dark, sheltered, with little tidal ...

but the underwater sections are simply breathtaking. Located on New Zealand's North Island, these caves are famous for their glowworms that light up the dark tunnels like stars in the night sky.

Are you looking for information on the best cenotes for Mexico cave diving? You’re in the right place. I live in Cozumel and ...

Krubera Cave in the republic of Georgia is currently the deepest known cave, at 7,208 feet. But Dark Star, with so many areas still to survey, is a prime candidate to take over the title.

From crystal-clear waters to amazing rock formations, cave swimming is an adventure that is both thrilling and peaceful. Here ...

Take a deep breath and dive below the surface with cave-diving experts and scientists in the video above. Find out what it takes to plunge into the dark and mysterious world of underwater caves. Caves ...

But hearing about what was going on underwater rather than seeing it for herself ... “It’s a very surreal experience,” Beddows says of her visits to the eerily dark, nearly football field–size cave.

The cave's underwater passages are winding and maze ... When Zhou was rescued at around 8:30 pm on February 8, he had spent days in a dark, confined space without food and was extremely weak.