New Guinea is the world's second-largest island, and with an area of 785,753 km2 (303,381 sq mi), the largest island in the Southern Hemisphere. Located in Melanesia in the southwestern Pacific Ocean, it is separated by the 150 km wide Torres Strait from the Australian continent. Numerous smaller islands are located to the west and east. The eastern half of the island is the major land mass of the independent state of Papua New Guinea. The western half, known as Western New Guinea or West Papua, forms a part of Indonesia and is organized as the provinces of Papua and West Papua.