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