It's often called a trench.
A submarine canyon is a deep, steep-sided valley cut into the seabed of the continental slope, often formed by underwater currents. It can be a conduit for sediment transport from the shelf to the deep ocean.
The earth has plates and when the earth shirfts its plates it open a trench canyon like structure. sorry if my grammer is not perfect. An oceanic trench forms when a denser plate is subducted into the Earth at a convergent plate margin. Because the denser plate (always oceanic crust) is being bent and pulled down into the mantle, a trench forms at this subduction zone.
An ocean submarine canyon is typically formed through a combination of processes such as erosion by currents, turbidity flows, and underwater landslides. These can carve deep, V-shaped valleys in the seafloor, similar to canyons on land. Over time, the canyon can deepen and widen as sediment is transported and deposited within it.
A deep valley carved by a river is called a canyon. Canyons are typically characterized by steep sides and are formed over long periods of time by the erosive action of flowing water.
When Pecos Bill fell off the tornado, he created the Grand Canyon by landing with such a force that it formed a massive canyon.
A submarine canyon is a deep, steep-sided valley cut into the seabed of the continental slope, often formed by underwater currents. It can be a conduit for sediment transport from the shelf to the deep ocean.
It could be called a trench, crevice, ocean ridge, or abyss.
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.
A valley that is underwater.
It is known as a trench, which is the lower part of the ocean. The deepest trench is the Marina Trench.
A valley that is underwater.
It is The Marianas trench it is the deepest underwater canyon and i believe the longest at 1580 miles.The mid atlantic ridge stretches 10,000 miles!
They are created in a process known as, subduction.
The earth has plates and when the earth shirfts its plates it open a trench canyon like structure. sorry if my grammer is not perfect. An oceanic trench forms when a denser plate is subducted into the Earth at a convergent plate margin. Because the denser plate (always oceanic crust) is being bent and pulled down into the mantle, a trench forms at this subduction zone.
A valley underwater is called a submarine canyon. These can form through a variety of geological processes, such as erosion by underwater currents or the collapse of underwater sediment. Submarine canyons can be important habitats for a diverse range of marine life.
Either, Oceanic trench or Submerine canyon.
You are probably looking for "trench".