Proper noun
Mariana Trench
(oceanography) A submarine trench in the North Pacific Ocean, noted for having the deepest known point on Earth.
An observation of a flatfish from the Bathyscaphe Trieste at the bottom of the Mariana Trench at a depth of almost convert has been questioned by fish experts, and recent authorities do not recognize it as valid. Source: Internet
A secondary deep with a depth of convert was located at approximately convert to the east at coordN in the Mariana Trench. Source: Internet
Kaikō made many unmanned descents to the Mariana Trench during three expeditions in 1995, 1996 and 1998. Source: Internet
Four-anchor books are for those who want a tale deeper than the Mariana Trench. Source: Internet
On 23 January 1960, she reached the ocean floor in the Challenger Deep (the deepest southern part of the Mariana Trench), carrying Jacques Piccard and Don Walsh. Source: Internet
The Mariana Trench isn‘t really the deep, narrow furrow that the word “trench” implies. Source: Internet