It is uner the oceans and seas. It is varied and irregular.
It is the submerged margin of the continents, extending from the shore to the first prominent break in the slope, which usually occurs at a depth of about 120-200 m. It is near the coastline.
The slope that extends from the continental shelf down to the ocean depth.
It is the deepest part of the seafloor, below 2.000 meters.
Deep-sea trenches are the deepest parts of the ocean. The deepest one, the Marianas Trench in the South Pacific Ocean, is 10,668 meters deep.
Large mountains located in the oceans floor. Rise up as far as 3000 m. Some of them protrude from the surface and form islands.
* Subduct: In geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another.
Natural risks: volcanoes and earthquakes