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