Coastal and underwater cave sites in southern Sicily contain important new clues about the path and fate of early human ...

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 ...

Beneath the land surface of the Bahamas, the underwater caves known as blue holes stretch for hundreds of miles in all directions. Today, these labyrinthine passages host a variety of tiny sea ...

Discover Cabo de Gata’s hidden marine caves, vital habitats supporting biodiversity and offering unique diving experiences in..

This story appears in the August 2010 issue of National Geographic magazine. We sink into Stargate, sweeping the void with our dive lights. Fifty feet from the surface looms a pale haze, less ...

A group of divers have connected two underwater caverns in eastern Mexico to reveal what is believed to be the biggest flooded cave on the planet, a discovery that could help shed new light on the ...

When it came to "Thirteen Lives" (2022), shooting in water tanks was much safer than in real underwater caves. But when building the cave sets, the film's production designer had to forgo foam and ...