Traces of life have been found in the deepest place on Earth, the Mariana Trench.
Experts are trying to look at the possibility that the mysterious "Alien Call" comes from whale species, but not yet identified.
A rare species of fish -- the first one of its kind seen alive -- was discovered by the Mariana Trench.
New species of jellyfishes found in Mariana Trench.
NOAA's exploration vessel Okeanos Explorer has been conducting a deepwater survey of the Mariana Trench.