Mariana Trench: Deepest ocean 'teems with microbes ... the sub has to operate in the pitch black and near freezing temperatures. These conditions also made it challenging to capture footage ...

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.

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

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 ...

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 ...

Deep below the Pacific Ocean lies the Mariana Trench, which is home to the Earth's deepest known point of the seabed, plunging to 10,935 metres below sea level.

Don said the space was about the size of a large household refrigerator, and that the temperature inside ... they were at the very bottom of the Mariana Trench. "After we landed, we stirred ...