Oceanic 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 circulation plays a crucial role in regulating the Earth's climate by distributing heat from the equator to the poles. There are two main components of oceanic circulation: surface currents and deep-water currents. Surface currents, like the Gulf Stream, are primarily influenced by wind patterns, while deep-water currents are driven by changes in water density. Together, these currents create a complex system that affects marine ecosystems and global weather patterns.