Papahānaumokuākea Marine National Monument is a large marine protected area made up of an isolated archipelago of islets, coral atolls, coral reefs, and surrounding deep-ocean waters in the northern Pacific Ocean. At 582,578 square miles (1,508,870 square km)—an area larger than all U.S. national parks combined—is one of the largest marine protected areas in the world, and it is the largest contiguous, fully protected U.S. conservation area.
Papahānaumokuākea Marine National Monument Article