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.

Technologies Corporation announced the sale of Mariner ocean bottom wireless nodes to Caspian Engineering Company, a ...

In the early 1950s, Marie Tharp began connecting dots to map the ocean floor, using sonar technology. Sonar detects underwater objects by timing the echo of a soundwave and was originally ...