What is the name of four ocean currents that circulate heat in a fluid?

Four ocean currents that circulate heat in the ocean are the Gulf Stream, the Kuroshio Current, the Antarctic Circumpolar Current, and the California Current. The Gulf Stream carries warm water from the Gulf of Mexico along the eastern coast of the United States, while the Kuroshio Current transports warm water across the western Pacific. The Antarctic Circumpolar Current encircles Antarctica, helping to distribute heat globally, and the California Current brings cooler water down the western coast of North America. Together, these currents play a crucial role in regulating the Earth's climate.