The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here ...

Narrator: The Mariana Trench is the deepest point on Earth ... the pressure is so great and the temperature is so low that calcium carbonate dissolves. But these amphipods have a secret weapon.

It is found within the crescent-shaped Mariana Trench ... Due to its depth, the trench is completely dark and experiences near-freezing temperatures. One-celled organisms called monothalamea ...

Not anymore. Kelly Walsh, the son of the great ocean explorer Don Walsh, has just descended to the bottom of the Mariana Trench, almost 11km down in the Pacific. He made the dive 60 years after ...

The Mariana Trench runs more than 1,500 miles long and ... 1,000 times the normal atmospheric pressure on the ground and the temperatures are barely above freezing. Despite the harsh conditions ...

Scientists first detected the unusual noises in 2014 while using underwater gliders to carry out an acoustic survey of the ...

The Ring of Fire is home to the deepest ocean trench, called the Mariana Trench. Located east of Guam, the 7-mile-deep Mariana Trench formed when one tectonic place was pushed under another.

The first explorers visited the trench in 1960 on a brief expedition, after which there had been no missions until Hollywood director James Cameron made the first solo trip to the bottom in 2012.