Ocean circulation refers to the large-scale movement of water within the world's oceans, driven by factors such as wind, temperature, and salinity differences. This movement creates currents that transport heat, nutrients, and gases across vast distances, influencing climate and marine ecosystems. There are two main types of ocean circulation: surface currents and deep-water currents. Surface currents, like the Gulf Stream, are primarily wind-driven and affect the upper layers of the ocean. In contrast, deep-water currents, part of the global conveyor belt, are driven by differences in water density and play a crucial role in regulating Earth's climate.