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