Cold ocean currents are large-scale movements of water that flow from polar regions toward the equator. These currents are typically found in the ocean's deeper layers and 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 Earth's climate by transporting cold water and influencing weather patterns. One well-known example of a cold ocean current is the California Current, which flows southward along the western coast of the United States. Cold currents can also affect marine ecosystems by bringing nutrient-rich waters to the surface, supporting diverse marine life and fisheries.