Relier Pairs Oceanic reliefVersion en ligne What are these landforms? par Maru Cruz 1 Abyssal plain 2 Ocean ridges 3 Continental slope 4 Ocean trenches 5 Continental shelves Large expanse of land at the deepest part of the ocean Large underwater mountain ranges Plains underwater near coastlines Incline from the continental shelf down to the abyssal plain Deep depressions in the ocean floor