What two things usually effect ocean surface- zone temperatures in most regions?

* Latitude: The amount of solar radiation that reaches the ocean surface decreases with increasing latitude. This is because the sun's rays have to travel through more atmosphere at higher latitudes, and the atmosphere absorbs some of the radiation.

* Ocean currents: Ocean currents can transport warm water from equatorial regions to higher latitudes, or cold water from polar regions to lower latitudes. This can affect the ocean surface temperature in the regions where the currents flow.