1. Continental shelf: This is the gently sloping area that extends from the coastline to the continental slope.
2. Continental slope: This is the steep slope that separates the continental shelf from the abyssal plain.
3. Abyssal plain: This is the flat, gently sloping area that covers most of the ocean floor.
4. Mid-ocean ridge: This is a long, narrow mountain range that runs through the center of the ocean.
5. Trench: This is a deep, narrow valley that forms where two tectonic plates collide.
6. Seamount: This is a small, isolated underwater mountain that rises from the ocean floor but does not reach the surface.
7. Guyot: This is a flat-topped seamount.