The hadal zone, as scientists call it, is located in the ocean trenches, more than 6,000 meters below the surface. This region is all darkness and intense pressure, yet... some rare species actually ...

It's located in the western Pacific Ocean near the Mariana Islands. The trench's depth was first measured during the Challenger expedition in 1875. But it wasn't until the 1950s that scientists ...

A research expedition in the Tonga Trench filmed a Pacific sleeper shark, a slow-moving, opportunistic predator rarely seen ...

Alexander Behm sails the North Sea and bounces sound waves off its bottom, advancing a new method of depth measurement known ... spreads laterally to form new ocean crust, a process he calls ...