The circular motion of the vortex draws debris into this stable center, where it becomes trapped. A plastic water bottle thrown away from the coast of California, for instance, takes the California Current south toward Mexico. There, it may catch the North Equatorial Current, which crosses the Pacific. Near the coast of Japan, the bottle may travel north on the Kuroshiro Current. Finally, the bottle travels westward on the North Pacific Current. The vortexes of the Eastern and Western Garbage Patches gradually draw in the bottle.