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 ...

The underwater caves of the ... exploring their dark, flooded tunnels and capturing their secrets. The last time the shallow caves on the Yucatán Peninsula flooded was around 8,000 years ago ...

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 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.

Two Chinese scientific researchers were successfully rescued recently from underwater ... successful cave diving rescues are extremely rare. Survival rates drop significantly for missing cave ...