Flat, level surface. Interesting and varied landscape as Earth's continents do. Many features found on land, including mountain ranges, valleys, flat plains, canyons, and volcanoes, also exist on the ocean floor. Also, all of these features under the ocean tend to be much larger than the similar features on land. The ocean floor has 2 distinct parts: The largest part, general ocean basin, and it's surrounded by the rising outside edges, the continental margins.