For example, along the west coasts of the continents, the currents flow toward the equator in both hemispheres. These are called cold currents as they bring cool water from the polar regions into the tropical regions. The cold current off the west coast of the United States is called the California Current.

Where do ocean currents flow?

Some ocean currents flow at the surface; others flow deep within water. Some currents flow for short distances; others cross entire ocean basins and even circle the globe. By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate.

Where do warm ocean currents flow?

As these currents flow along the edges of continents, they affect the temperature of the coastal regions. Along the east coast of the U.S., the Gulf Stream carries warm water from the equatorial region to the North Atlantic Ocean, keeping the southeast coast relatively warm.