Mariana trench live feed: engrossing viewing from deepest place on Earth

Rare footage from 11km underwater streams on Youtube from National Oceanic and Atmospheric Administration vessel

A live video feed of the Mariana trench the deepest place on Earth is proving engrossing viewing for those above sea level.

The Mariana trench plunges about 11km (seven miles) deep under the Pacific further down than the summit of Mount Everest is above sea level. Because of the difficulties in reaching such depths, little is known about the area.

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