Project Kaisei (from 海星, kaisei, "ocean planet" in Japanese) is a scientific and commercial mission to study and clean up the Great Pacific Garbage Patch, a large body of floating debris trapped in the Pacific Ocean by the currents of the North Pacific Gyre. Discovered by NOAA, the patch is estimated to contain 20 times the density of floating debris compared to the global average. The project aims to study the extent and nature of the debris with a view to capturing, detoxifying, and recycling the material, and is organised by the Ocean Voyages Institute, a California-based 501c3 non-profit organisation dealing with marine preservation. The project is based in San Francisco and Hong Kong.