Flexi Says: Ocean currents on Earth can't actually stop because they result from interactions within the Earth-Moon-Sun system including evaporation due to sunlight energy, tidal flows caused by the Moon's gravity, and global winds. Hypothetically, a still body of water with no currents would become layered. Denser, saltier, colder water would settle to the bottom and the top layer would be less dense, less salty, warmer water.