Ocean currents play a crucial role in regulating the planet's climate by transferring heat around the globe. Warm ocean currents carry warm water from the equator towards the poles, while cold ocean currents carry cold water from the poles towards the equator. This redistribution of heat helps to moderate temperatures, influencing weather patterns and climate conditions in different regions of the world. Ocean currents also impact the marine ecosystem, influencing the distribution of nutrients and marine life across the oceans.