How does the sediment rain in the ocean affect this ? I would think that if the plastic pollution stopped one day, within a few years most of the plastic would

How does the sediment rain in the ocean affect this ? I would think that if the plastic pollution stopped one day, within a few years most of the plastic would be sequestered at the bottom of the ocean. Even though plastic floats, eventually it gets inside animal bodies which eventually die and rain to the bottom ... yes ? Genuinely curious...