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hadal zone

American  
[hay-duhl zohn] / ˈheɪ dəl ˈzoʊn /

noun

  1. the deepest region of the ocean, which is found within ocean trenches and begins at depths greater than about 6,000 m (19,680 ft).


Example Sentences

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See Examples For:

Finally, there are the incredibly deep seafloor trenches known as the hadal zone, named after Hades, Greek god of the underworld.

From Scientific American ● Aug. 6, 2022

Since then, Dr Cui has set his eyes on the hadal zone in general, and in particular on the bottom of the Mariana trench.

From Economist ● Aug. 25, 2016

The hadal zone is one of the most poorly studied habitats on Earth.

From Nature ● Mar. 17, 2016

Such landers are the only tools currently available to explore the hadal zone — and they are no substitute for submersibles, says Jeffrey Drazen, a deep-sea researcher at the University of Hawaii at Manoa.

From Nature ● Dec. 8, 2015

Nereus was lost during only its second mission in the hadal zone.

From BBC ● Jul. 16, 2014

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