Because the oceans cover most of surface do ocean currents transport energy from one region to another?

Ocean currents do transport energy from one region to another, but the amount of energy transported is relatively small compared to the amount of energy transported by the atmosphere. The main reason for this is that ocean currents are much slower than atmospheric winds. The atmosphere is also much less dense than the ocean, so it can transport more energy for the same speed.

That said, ocean currents can still transport a significant amount of energy. For example, the Gulf Stream, which is a warm ocean current that flows from the Gulf of Mexico to the North Atlantic Ocean, transports about 1.5 petawatts of energy. This is equivalent to about 15% of the total energy consumption of the United States.

Ocean currents can also transport heat from one region to another. This can have a significant impact on the climate of a region. For example, the Gulf Stream helps to keep the climate of Europe relatively mild.

Overall, ocean currents play a relatively small role in the global transport of energy. However, they can still have a significant impact on the climate of a region.