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.

His inventions are helping to map the ocean floor in detail for the first time. Photo by NATIONAL GEOGRAPHIC CREATIVEWORKS Today, Ved’s work is inspiring and enabling future talent as he leads a ...

A cliché among oceanographers is that humanity knows more about the surface of Mars than we do about the Earth's ocean floor.