Ocean currents are the horizontal movements of cohesive streams of ocean water in a definite direction. They are of two types: warm currents and cold currents. Warm currents flow from the equatorial region towards the poles, while cold currents flow from the poles towards the equatorial regions. Ocean currents are driven by gravity, wind (Coriolis Effect), and water density. They are responsible for the transfer of heat, variations in biodiversity, and Earth’s climate system. Ocean currents can be permanent or continuous, and they flow in one of the Earths oceans.