Mariana Trench: The deepest depths
By Becky Oskin Contributions from Traci Pedersen , Stephanie Pappas , Elizabeth Dohrer published 3 days ago
The Mariana Trench reaches more than 7 miles below the surface of the Pacific Ocean.
The Mariana Trench is the deepest oceanic trench on Earth and home to the two lowest points on the planet.
The crescent-shaped trench is in the Western Pacific, just east of the Mariana Islands near Guam. The region surrounding the trench is noteworthy for many unique environments, including vents bubbling up liquid sulfur and carbon dioxide, active mud volcanoes and marine life adapted to pressures 1,000 times that at sea level.
The Challenger Deep, in the southern end of the Mariana Trench (sometimes called the Marianas Trench), is the deepest spot in the ocean. Its depth is difficult to measure from the surface, but in 2010, the National Oceanic and Atmospheric Administration used sound pulses sent through the ocean and pegged the Challenger Deep d at 36,070 feet (10,994 meters). A 2021 estimate using pressure sensors found the deepest spot in Challenger Deep was 35,876 feet (10,935 m). Other modern estimates vary by less than 1,000 feet (305 m).
https://www.livescience.com/23387-mariana-trench.html
