New Zealand (Māori: Aotearoa) is an island country located in the south-western Pacific Ocean, near the centre of the water hemisphere. It consists of a large number of islands, estimated around 600, mainly remnants of a larger land mass now beneath the sea. The two main islands by size are the North Island (or Te Ika-a-Māui) and the South Island (or Te Waipounamu), separated by the Cook Strait. The third-largest is Stewart Island (or Rakiura), located 30 kilometres (19 miles) off the tip of the South Island across Foveaux Strait. Other islands are significantly smaller in area. The three largest islands stretch 1,500 kilometres (930 miles) across latitudes 34° to 47° south. New Zealand is the sixth-largest island country in the world, with a land size of 267,710 km2 (103,360 sq mi).