When hundreds of eerily perfect circles were discovered on the bottom of the Mediterranean Sea, theories abounded about what they could mean. Four years of underwater research revealed a lost world.

The UK company that designed the modular underwater habitats says they could be used for everything from marine studies and tourism to security. View on euronews ...

Now, we continue our story from Radio Diaries about the Navy's Sealab program. As we heard elsewhere on today's show, back in the 1960s, the Navy built a series of underwater habitats under the ...

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 ...

Ben Hellwarth, author of Sealab, America's Forgotten Quest to Live and Work on the Ocean Floor, said when Bond joined the ...

He adjusts his mask, swallows a big breath of air and then dives into the sea. And he won’t come ... In the film, he gracefully navigates underwater caves and leaps off rocks and coral as ...