The abyssal plain.
The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. These areas are called deep sea trenches and the Challenger Deep in the Mariana Trench in the Pacific is the deepest known point in Earth's oceans.
A trench.
yes they do called coral reef
99 floors
Challenger deep.
Deep sea submersibles help get research from the ocean floor.
On the ocean floor
A deep sea basin is a depression of the sea floor more or less equidimensional in form and of variable extent.
Deep sea fishing fishing far out at sea is called deep sea fishing .
The bottom of an ocean is typically called the seafloor. Although the seafloor can have variant geographical features such as mountains or volcanos, a normal, and flat terrain is called the seafloor.
The deepest part if the ocean is called the ABYSSOPELAGIC it is about 6000 meters
The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. These areas are called deep sea trenches and the Challenger Deep in the Mariana Trench in the Pacific is the deepest known point in Earth's oceans.