The Ross Gyre and Weddell Gyre are two gyres that exist within the Southern Ocean. Other smaller gyres are found in lesser seas and a single gyre flows around Antarctica. Large gyres (vortexes) in the oceans trap floating plastic debris. Many researchers report that the ocean currents transfer floating litter by the five subtropical gyres. It resides in the central ocean gyres, a large system of rotating ocean currents. Ocean gyres are known to collect pollutants. Many of the ocean's largest currents circulate around warm, high-pressure areas called gyres. The combined flow of these gyres acts to advect the storm slowly poleward and westward. Plastic debris tends to accumulate at the centre of ocean gyres. Besides gyres, there are temporary surface currents that occur under specific conditions. In the open ocean Ekman pumping occurs with gyres. Munk coined the term "ocean gyres," a term now widely used. The current creates the Ross and Weddell gyres. Entrapment maneuvers include circles, gyres, ellipses, figure-of-eights, and hyperbolas. Like the other gyres, it contains a garbage patch.