a dip in the sea BED
Deep Trench in the ocean floor. It can sometimes be mistaken for a mid-ocean ridge.
the answer i Izu the trench
It is in the Mariana Trench!
The ocean trench is almost 7 miles deep.
This iis a trench.Also ocean basin is the deepest part of the ocean.
The deepest trenches in the world are -1 - Mariana Trench (aka Challenger Deep) in the western Pacific Ocean at 11,034 metres deep.2 - Tonga Trench in the south Pacific Ocean at 10,882 metres deep.3 - Philippine Trench (aka Philippine Deep, Mindanao Trench and Mindanao Deep) in the western Pacific Ocean at 10,540 metres deep.
The deepest point on the Earth's surface is Challenger Deep, part of the Marianas Trench in the Pacific Ocean
a deep-ocean trench is a portion of the earth crust
probably..
ocan
Some ocean trenches can be as deep as 10,971 m (35,994 ft).
a deep-ocean trench is a portion of the earth crust