How Deep is the Mariana Trench?
Labeled as the deepest part of the ocean, the Mariana Trench sits in the Western Pacific Ocean at a maximum depth of 10,994 meters (36,070 feet). The deepest point, Challenger Deep, gives way to the trench’s extreme depth, but also to its unique ecosystem filled with habitats, organisms living under deep-water pressure, and total darkness.
For decades, the trench has been one of the primary locations for deep-sea exploration, as it helps us better understand the limits of life on Earth.
The Mariana Trench’s extreme depth has made it the epicenter for several historic deep-sea explorations.
For example, in 1960, Jacques Piccard and Don Walsh piloted the Bathyscaphe Trieste.
The ship made history as the first crewed vessel to travel to the bottom of the Challenger Deep region.
52 years later, on March 26, 2012, film Director James Cameron, director of "Titanic," piloted a Deepsea Challenger submersible, which advanced our understanding of the Challenger Deep.
Despite its remoteness, the Mariana Trench has not been the site of any known shipwrecks or lost vessels, due to its location being far from major shipping routes and its extreme depth.
Lastly, the Cold War saw achievements in deep-sea exploration.
In 1974, the CIA launched Project Azorian to recover a sunken Soviet submarine.
Although not in the Mariana Trench region, the vessel lay 5,000 meters below the Pacific’s ocean surface.
Frequently Asked Questions
1) How deep is the Mariana Trench?
The Mariana Trench is about 35,876 to 36,070 feet deep at Challenger Deep.
2) What is the pressure of the Mariana Trench?
The pressure of the Mariana Trench is over 1,000 times standard sea-level pressure, or about eight tons per square inch.
3) Does life exist in the Mariana Trench?
Yes. Highly adapted creatures like snailfish, amphipods, and single-celled xenophyophores survive the pressure.
Source: https://illumin.usc.edu/uncovering-the-secrets-of-the-mariana-trench/
Why it matters
The Mariana Trench remains a monster of the ocean. Its depth, along with unexplored areas, is a motivator for innovation in deep-sea exploration.