Learn about ocean currents , the continuous, predictable, directional movement of seawater caused by various forces. Explore the factors, types and examples of ocean currents and their impact on climate and ecosystems. Explore the major ocean currents of the world — their locations, types, causes, impacts, key facts, and a free PDF map. Ocean current , stream made up of horizontal and vertical components of the circulation system of ocean waters that is produced by gravity, wind friction, and water density variation in different parts of the ocean. They are similar to winds in that they transfer heat from Earth’s equatorial areas to the poles. Learn about the two types of ocean currents : surface and deep-water, and how they are driven by wind, Earth's rotation, temperature, salinity, and other factors. Discover how ocean currents influence climate, ecosystems, and global circulation.
