The Indian Ocean "gravity hole" is a region where Earth's mass is reduced, leading to weak gravitational pull, lower-than-average sea levels and a puzzle scientists have only just begun to solve.

The ocean is home to all manner of mysteries, from “alien” shape-shifters to ancient shipwrecks. And so, when Richard Branson and a team of scientists took a submersible down to the bottom of Belize’s ...

Here’s what you’ll learn when you read this story: The floor of the ocean off the coast of the Pacific Northwest has sprung a leak. The spring, known as Pythia’s Oasis, is likely venting water from ...

An underwater robot launched from Woods Hole Friday, embarking on a scientific quest to become the first autonomous vehicle to circumnavigate the globe. If successful, the five-year journey could open ...