Mariana Trench: Deepest ocean 'teems with microbes ... a recent study found this was a widespread problem, even for animals living in the deep. The dive forms part of the Five Deeps expedition ...

Narrator: The Mariana Trench is the deepest point on Earth ... Now, like lobsters, these animals have hard exoskeletons made of calcium carbonate, which you normally wouldn't find down here ...

Likewise, with the deep ocean, Don Walsh went to the bottom of the Mariana Trench and then for several ... Galathea expedition in 1951 trawled animals from more than 10km down.

The moaning was first detected back in 2014 and it had marine experts stumped, thinking it sounded more like ship noise than any Mariana Trench animals. They figured it must be some kind of whale ...

The puzzle began in 2014 when researchers recorded a sound resembling a moan followed by metallic pings over the Mariana Trench ... that it was made by an animal – they would think it ...

Researchers studying hydrothermal vents in the depths of the Pacific Ocean’s Mariana Trench have found tiny ... a vital function in modern plant, animal, and microbial life, can occur ...