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

The odd sounds, described as "biotwang" noises, sound a bit like sci-fi starships ... gliders to carry out an acoustic survey ...

In 2014, scientists first heard a unique sound coming from the waters around the Mariana Trench. Experts weren't sure what it was, but now a team of researchers led by Oregon State University have ...

The eerie sounds were first heard coming from the Mariana Trench - which is where the deepest known point on Earth is located - ten years ago. Experts long suspected that an underwater creature ...

Only a handful of people have ever visited the bottom of the Mariana Trench, a crescent-shaped depression ... samples and sonar “eyes” that use sound waves to identify surrounding objects ...