a part of seafloor spreading where the deep sea splits in two
in the west Philippine sea
6657m
Atlantic
a dip in the sea BED
The Mariana trench has a very harsh environment and it is a deep sea environment.
Calypso Deep - 5267m, the deepest section of the Hellenic Trench
no
Trench
Convergent
trench
This iis a trench.Also ocean basin is the deepest part of the ocean.
The deepest point in any ocean is the Mariana Trench (aka Challenger Deep) in the western Pacific Ocean at 11,033 metres deep.