Gyres are large systems of rotating ocean currents that are driven by the Earth's wind patterns and the rotation of the planet itself. They play a crucial role in regulating the climate by distributing heat across the oceans. There are five major gyres in the world's oceans, including the North Atlantic Gyre and the South Pacific Gyre, each forming a circular motion that helps to move water and nutrients around. These currents can also impact marine life and ecosystems. For example, the Great Pacific Garbage Patch is a result of debris accumulating in one of the gyres, highlighting how these currents can trap waste and affect ocean health. Understanding gyres is essential for addressing issues like climate change and pollution.