The area in the center of a gyre tends to be very calm and stable. The North Pacific Subtropical Gyre is formed by four currents rotating clockwise around an area of 20 million square kilometers (7.7 million square miles): the California current, the North Equatorial current, the Kuroshio current, and the North Pacific current. Increasingly, however, it also refers to the garbage patch as a vortex of plastic waste and debris broken down into small particles in the ocean. The National Oceanic and Atmospheric Administration (NOAA) defines a gyre as a large system of swirling ocean currents.
The entire Great Pacific Garbage Patch is bounded by the North Pacific Subtropical Gyre. The zone acts like a highway that moves debris from one patch to another. This convergence zone is where warm water from the South Pacific meets up with cooler water from the Arctic. These areas of spinning debris are linked together by the North Pacific Subtropical Convergence Zone, located a few hundred kilometers north of Hawaii. The patch is actually comprised of the Western Garbage Patch, located near Japan, and the Eastern Garbage Patch, located between the U.S. The Great Pacific Garbage Patch, also known as the Pacific trash vortex, spans waters from the West Coast of North America to Japan.
Marine debris is litter that ends up in oceans, seas, and other large bodies of water. The Great Pacific Garbage Patch is a collection of marine debris in the North Pacific Ocean.
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