For years, a strange and unsettling noise coming from the Mariana Trench, the deepest part of the ocean, puzzled scientists.

The Mariana Trench (sometimes called Marianas Trench) is a mysterious and extremely deep oceanic trench. Plunging deeper than Mount Everest is tall and stretching five times longer than the Grand ...

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...