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