What is a large streams of surface seawater that move heat around the earth?

Large streams of surface seawater that move heat around the Earth are known as ocean currents. These currents are driven by factors such as wind patterns, the Earth's rotation, and differences in water density. They play a crucial role in regulating the planet's climate by distributing heat from the equator toward the poles. Notable examples include the Gulf Stream in the Atlantic Ocean and the Kuroshio Current in the Pacific Ocean.