Trenches
Continental shelf
ocan
trenches.
rift valley
An ancient under sea valley carved in the ocean floor is known as a canyon, usually given the name of the contributory river on the land. such as the Hudson Canyon, or the Clutha Canyon.
This iis a trench.Also ocean basin is the deepest part of the ocean.
Yes, there is a valley in the center of the mid-ocean ridge called the rift valley. It is formed due to tectonic plates diverging and magma rising to create new oceanic crust. The rift valley is a significant feature of the mid-ocean ridge system.
an ocean valley is a valley that contains water
the ocean-bottom
under toe
A Structure.
A deep valley with steep sides under the ocean is known as a submarine canyon. These canyons are typically formed by underwater currents, erosion, or tectonic activity and can reach impressive depths comparable to those found on land. Submarine canyons provide unique habitats for various marine species and can play a role in the transport of sediments and nutrients on the ocean floor.