Your question seems to contain a misunderstanding. Soil, as we typically think of it, refers to the loose, weathered layer that covers the Earth's land surface. Oceans do not have soil in the traditional sense. Instead, the bottom of the ocean is covered by a variety of sediments such as sand, silt, clay, and organic material derived from marine organisms. These sediments accumulate on the ocean floor and form the ocean's substrate, rather than soil.