Place Names

Tsushima, Japan


34°25'N and 129°20'E

Tsushima Island

From Wikipedia, the free encyclopedia

Native name: 対馬
Tsushima Island (Japan)
Location Tsushima Strait
Coordinates 34°25′N 129°20′E / 34.417°N 129.333°E / 34.417; 129.333
Area 708.7 km2 (273.63 sq mi)[1]
Coastline 915 km (568.6 mi)
Highest elevation 649 m (2,129 ft)
Highest point Mt. Yatate[2]
Largest city Tsushima, Nagasaki
Population 39,716 (as of 2006)
Density 58.18 /km2 (150.69 /sq mi)
Ethnic groups Japanese people

Tsushima Island (対馬, Tsushima) is an island of the Japanese archipelago situated in the middle of the Tsushima Strait at 34°25'N and 129°20'E.[3][4]

The main island of Tsushima was once a single island, but the island was divided into two in 1671 by the Ōfunakosiseto canal and into three in 1900 by the Manzekiseto canal. Tsushima is composed of North Tsushima Island (Kami Jima), South Tsushima Islands (Shimo Jima), and over 100 smaller islands. Generally the name Tsushima refers to all the islands.

 The main three islands are the largest island of Nagasaki Prefecture and the fourth largest in Japan (excluding Honshu, Kyushu, Shikoku and Hokkaido). The city of Tsushima encompasses the entire island.


Tsushima Island is located west of the Kanmon Strait at a latitude between Honshu and Kyushu of the Japanese mainland. The Tsushima Strait splits at the Tsushima Island Archipelago into two channels; the wider channel, also closer to the mainland of Japan, is the Tsushima Strait.

Ōfunakoshi-Seto and Manzeki-Seto, the two canals built in 1671 and 1900 respectively, connect the deep indentation of Asō Bay to the east side of the island. The archipelago comprises over 100 smaller islets in addition to the main island.

Tsushima is the closest Japanese territory to the Korean Peninsula, lying approximately 50 km from Busan;[6] on a clear day, the hills and mountains of the Korean peninsula are visible from the higher elevations on the two northern mountains. The nearest Japanese port Iki, situated entirely in the Tsushima Basin, is also 50 km away.[7]

Tsushima Island and Iki Island contain the Iki–Tsushima Quasi-National Park,[5] designated as a nature preserve and protected from further development. Much of Tsushima, 89%, is covered by natural vegetation and mountains.

The Japanese government administers Tsushima Island as a single entity, although artificial waterways have separated it into two islands connected by the narrow isthmus outlined by the Aso Bay. The northern area is known as Kamino-shima (上島), and the southern island as Shimono-shima (下島). Both sub-islands have a pair of mountains: Shimo-no-shima has Mount Yatate (矢立山), 649 m (2,130 ft) high,[2] and Ariake-yama (有明山), 558 m (1,831 ft) high.[2] Kami-no-shima has Mi-take (御嶽), 487 m (1,598 ft).[2]

The two main sections of the island are now joined by a combination bridge and causeway.

The island has a total area of 696.26 km2, or 268.82748 square miles.