What does hadal mean?
The deepest part of an ocean, typically a depression in the Earth's crust. A hadal zone is the deepest part of the ocean, extending from about 6,000 to 11,000 meters below sea level.
Example
"The hadal zone of the Mariana Trench is one of the most extreme environments on Earth."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.