Few people know that back in 1977, the Bollywood film Chandi Sona was partly shot inside the grotto. Here's what happened.

Mosquito Bay on Vieques in Puerto Rico is considered the brightest bioluminescent bay in the world. Tiny organisms called ...

Off the coast of Sicily, Ustica reveals a wild mess of volcanic cliffs, secret caves and a truly exceptional seabed to ...

A Christmas tradition running for more than 30 years is set to return this December - with a new session dedicated to children with special educational needs (SEN). The underground Santa’s Grotto at ...

Scientists found a “golden” sea creature “deep within” underwater caves off Saudi Arabia and discovered a new species, a study said. Photo from Getty / iStockphoto On a coral reef off the western ...

This article is brought to you by our exclusive subscriber partnership with our sister title USA Today, and has been written by our American colleagues. It does not necessarily reflect the view of The ...

It was a journey full of firsts, as are most trips to the tiny Pacific nation of Palau. Before my first swim with jellyfish and my first leap from a paddleboard into an underwater cave, my passport ...

After two years of preparation, dive partners Bill Gavin and Parker Turner thought they had planned their excursion to a T. This would be the first of a series of dives the pair would complete, all in ...

Every day, crowds flock to the Lukács Thermal Baths in Budapest, soaking in warm mineral-rich pools as yellow trams clatter along Frankel Leó Street. Most never suspect that just yards away, beneath ...