The Mariana Trench was first measured by HMS Challenger in 1875 using sounding lines. The depth recorded by that method was 4,475 fathoms (8,184m).
The first sonar measurement was made by another oceanographic survey ship of the same name, in 1951. The depth reported by that expedition was 10,911 meters.
Depths. The Mariana Trench is the deepest trench ,Its depth has been measured at 36,201 feet (11,034 meters)
11,034 meters
The Mariana Trench is the deepest trench in Earth's oceans.
Depth of character.
The average depth of the Pacific Ocean is 15,200 feet. The deepest depth of the Pacific is the Mariana Trench, which is 36,200 feet deep.
The Mariana Trench in the Pacific with a maximum known depth of 6.8 miles
Hardly any organisms can survive in the Mariana Trench due to the pressures at that extreme depth. Xenophyophores, amphipods, sea cucumbers, snailfish and jellyfish are examples of organisms that live in the Mariana Trench.
The mariana trench is greater by almost 6500 feet 29k to 35k
It is the Mariana Trench, located a little bit outside of Japan.
The Mariana trench is the deepest known oceanic floor - at a maximum known depth of 36,070 feet (+/- 130 feet).
Hadalpelagic
This point is Challenger Deep in the Mariana Trench, Pacific Ocean (10 911 +/- 40 m after the latest measurements).