- Japanese archipelago at the Last Glacial Maximum about 20,000 years ago, thin black line indicates present-day shorelinesVegetated landUnvegetated landOcean
The Japanese archipelago (Japanese, Nihon rett?) is a group of 6,852 islands that form the country of Japan. It extends over 3,000 km (1,900 mi) from the Sea of Okhotsk in the northwest to the East China and Philippine Seas in the southwest along the Pacific Ocean coast of the Eurasian continent, and consists of three island arcs from north to south: the Northeastern and Southwestern Japan Arcs, and the Ryukyu Island Arc. The Kuril Island Arc, the Dait? Islands, and the Nanp? Islands are not parts of the archipelago.
Japan is the largest island country in East Asia and the fourth-largest island country in the world with 377,975.24 km2 (145,937.06 sq mi). It has an exclusive economic zone of 4,470,000 km2 (1,730,000 sq mi).
The term mainland Japan is used to distinguish the mainland from the remote islands. It is used when referring to the main islands of Hokkaido, Honshu, Kyushu, Shikoku and Okinawa. It included Karafuto Prefecture (Sakhalin) until the end of World War II.
The term Home Islands was used at the end of World War II to define the area of Japan to which its sovereignty and the constitutional rule of the emperor would be restricted. The term is also commonly used today to distinguish the archipelago from Japan's colonies and other territories.
The archipelago consists of 6,852 islands (here defined as land more than 100 m in circumference), of which 430 are inhabited. The six main islands, from north to south, are Sakhalin (a part of the Russian Federation), Hokkaido, Honshu, Shikoku, Kyushu, and Okinawa. Honshu is the largest and referred to as the Japanese mainland.
The topography is divided as:
MILT classification 6,852 islands(main islands: 5 islands, remote islands: 6,847 islands)