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Tsushima: The Strategic Island City of Nagasaki Prefecture

Tsushima: The Strategic Island City of Nagasaki Prefecture Located in the Tsushima Strait, Tsushima is a unique island city within Nagasaki Prefecture, Japan. Positioned between the Korea...

Tsushima: The Strategic Island City of Nagasaki Prefecture

Located in the Tsushima Strait, Tsushima is a unique island city within Nagasaki Prefecture, Japan. Positioned between the Korean Peninsula and the Japanese mainland, this island serves as a vital geographical link in the region. Encompassing the entirety of Tsushima Island, the city is characterized by its rugged coastline, rich history, and distinct biological heritage.

Tsushima City-hall
Tsushima City-hall

Key Facts

  • Location: Nagasaki Prefecture, Kyushu region, Japan.
  • Total Area: 708.61 km².
  • Population: 25,945 (as of November 1, 2024).
  • Climate: Humid subtropical (Cfa).
  • Endemic Species: The Tsushima cat (critically endangered).
  • Major Ports: Izuhara and Hitakatsu.

Geography and Islands

Tsushima Island lies north of Nagasaki on the western side of Kyushu. The city's coastline is extensive, stretching a total of 915 km. A prominent feature of the landscape is Asō Bay, which is known for its striking rias coastline—a type of jagged coastline formed by the submergence of river valleys.

A map of Tsushima Province in 1838 (Japanese language edition)
A map of Tsushima Province in 1838 (Japanese language edition)

In addition to the main islands of Kamino-shima and Shimono-shima, the city encompasses several other smaller islands, including:

  • Santsu-jima
  • Shimayama-jima
  • Uni Island

Geographically, Tsushima is situated approximately 49.5 km from Busan, South Korea, 60 km from Iki, and 138 km from the city of Fukuoka.

History and Governance

The history of the region dates back to at least 220 AD. Over the centuries, Tsushima has played a significant role in international relations. In July 1899, an Imperial decree established Izuhara, Sasuna, and Shishimi as open ports for trade with the United Kingdom and the United States.

The modern administrative structure of the city was finalized on March 1, 2004. This was achieved through the merger of six towns: Izuhara, Mitsushima, and Toyotama from the Shimoagata District, and Mine, Kamiagata, and Kamitsushima from the Kamiagata District. This merger resulted in the dissolution of both districts.

Flora, Fauna, and Environment

Tsushima is home to unique wildlife, most notably the Tsushima cat (also known as the Tsushima leopard cat). This endemic subspecies of Prionailurus bengalensis is currently listed as a critically endangered species on the Japanese Red List. As of 2009, conservationists estimated that only 80 to 100 of these animals remained in the wild.

The island's natural symbols include the Ring-necked pheasant (bird), the Azalea (flower), and the Chionanthus retusus (tree).

Harbor in Tsushima (1990)
Harbor in Tsushima (1990)

Climate Patterns

The island experiences a humid subtropical climate (Köppen classification Cfa), characterized by warm summers and cool winters. Precipitation is significant throughout the year, with much heavier rainfall occurring during the summer months. For example, average annual precipitation in Izuhara is approximately 2,302.6 mm.

Comparison of Average Annual Precipitation by Location
Location Average Precipitation (mm) Average Precipitation (inches)
Izuhara 2,302.6 90.65
Mitsushima 1,882.2 74.10
Uni Island 1,434.9 56.49

Demographics and Economy

Tsushima has faced a significant population decline. As traditional extended families are replaced by smaller nuclear families, the population has trended downward. As of recent data, the elderly population makes up nearly a quarter of the residents, a higher proportion than both the Nagasaki Prefecture and the national average of Japan.

The local economy relies heavily on the natural environment. Many residents work in the fishing industry, and the island is also recognized for its pearl culture. Additionally, the scenic beauty of the islands supports a growing tourism industry, particularly during the summer months when beaches attract many visitors.

Transportation and Connectivity

Despite its island location, Tsushima is well-connected via air and sea:

  • Air: Tsushima Airport (TSJ) is located about 10 km northeast of the city, providing daily flights to Fukuoka and Nagasaki via ANA and Oriental Air Bridge.
  • Sea: The ports of Izuhara and Hitakatsu facilitate travel. Ferries run several times daily to Hakata (Kyūshū) and a few times a week to Busan, South Korea.
  • Road: Japan National Route 382 serves the island.

Frequently Asked Questions

What is the Tsushima cat?

The Tsushima cat is an endemic subspecies of the leopard cat native to the island. It is currently critically endangered, with an estimated population of only 80 to 100 animals as of 2009.

How can I travel from Tsushima to South Korea?

You can travel to Busan, South Korea, via ferry services that depart from the northern port of the island a few times per week.

What is the best time to visit Tsushima for beach activities?

Summer is the most popular time for tourism, as the beaches become crowded with visitors during the warmer months.

What are the main industries in Tsushima?

The primary economic drivers are fishing, pearl culture, and tourism.

How is the climate in Tsushima?

Tsushima has a humid subtropical climate with warm summers and cool winters. It receives significant rainfall, especially during the summer.