The picture gives information about how warm and cold currents move in the oceans all over the world. From the graph, we can find that there are two currents, the warm shallow current and cold and salty deep current. Because of the solar warming of ocean waters, the warm shallow current moves to the west while the cold and salty deep current moves to the east. It is also worth noticing that sea-to-air heat transfer can be found in the northern part of the Atlantic Ocean. Overall, we can draw a conclusion that both warm and cold currents move constantly around the world.