The most famous ocean current of all is the Gulf Stream. It is like a river that flows through the sea instead of on land. But the Gulf Stream is so vast that it is larger than all the rivers in the world put together. The Gulf Stream has a clear indigo-blue color and it can be seen dearly where it contrasts with the green and gray waters that it flows through. The Gulf Stream moves northward along the coast of Eastern United States, across the North Atlantic Ocean, and then to northwest Europe. The water of the Gulf Stream comes from the movement of the surface waters near the Equator in the Atlantic. This movement or “drift” is westward. So the Gulf Stream starts by moving north of South America and into the Caribbean Sea. It actually becomes what we call the Gulf Stream when it starts moving northward along the east coast of the United States.