Relier Pairs Ocean Floor FeaturesVersion en ligne oceanic landforms par Taylor Tant 1 Continental Shelf 2 Rift/ Rift Zone 3 Trench 4 Mid Ocean Ridge 5 Continental Slope 6 Abyssal Plain The edge of the continent that is under water; shallow part of the ocean the center of the highest part of the mid-ocean ridge; it is a narrow trench large area of flat land on the ocean floor a steep-sided canyon with deep, narrow valleys in the bottom of the ocean. The steep slope where the continental shelf drops to the bottom of the ocean floor underwater volcanic mountains that divide the ocean floor into 2 parts