| 1．Iwai Island |
| Iwai Island (祝島, Iwai-shima) is an island of the Inland Sea in Japan. With a total altitude of 82 m,[1] it lies at the south-eastern edge of the Yamaguchi Prefecture (山口県, Yamaguchi-ken) at coordinates 33°46′48.00″N 131°58′12.00″E / 33.7800000°N 131.9700000°E / 33.7800000; 131.9700000 (Iwai Island). |
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| 2．Ganryū-jima |
| Ganryū-jima (巌流島, formerly Funa-jima 船島[1]) is an island in Japan located between Honshū and Kyūshū, and accessible via ferry from Shimonoseki Harbor (下関港). |
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| 3．Tsunoshima |
| Tsunoshima (角島) is an island located in the Sea of Japan. Located in the north west of Yamaguchi Prefecture, it is a part of Shimonoseki city. The island has an area of 4.1 square kilometers (1.6 sq mi) and has a coastline of 17.1 kilometres (10.6 mi). The island consists primarily of basalt, and is a part of the Kita-Nagato Kaigan Quasi-National Park.[1] As of 28 August 2008, the population of Tsunoshima is 907.[2][3] |
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| 4．Hikoshima |
| Hikoshima (彦島) (also called Hikishima (引島) in Nihon Shoki) is an island on the south-west tip of Honshu, Japan. |
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| 5．Mutsure Island |
| Mutsure Island (Japanese: 六連島) is an island located directly west of Shimonoseki in the Sea of Japan.[1][2] On March 20, 2024, nine people were killed when a South Korean-flagged tanker Keoyoung Sun loaded with 980 tons of acrylic acid capsized off the island.[3] |
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| 6．Mishima Island, Yamaguchi |
| Mishima (Japanese: 見島, Hepburn: Mishima), is an island in the Hagi Archipelago [ja] in Hagi, in Yamaguchi Prefecture in the Chūgoku region of south-western Honshu, Japan. It lies in the Sea of Japan, approximately 44 km (27 mi) from Hagi. It has a surface area of approximately 7.73 km2 (2.98 sq mi), and a population of 829 in 458 households.[1] |
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| 7．Hashira Island |
| Hashira Island (柱島, Hashira-jima) is an island in southern Hiroshima Bay in the Inland Sea, Yamaguchi Prefecture, Japan. Located 26 kilometres (16 mi) southeast of Iwakuni, it is part of the Kutsuna Islands within the Bōyo Islands group. The island covers 3.12 square kilometres (1.20 sq mi) and as of 2013 had a population of 184 residents.[1] [2][3] |
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| 8．Ōzushima |
| Ōzushima (大津島), or Ozu Island, is an inhabited island in the Inland Sea, Japan. Administratively, it forms part of the city of Shūnan, Yamaguchi Prefecture. Ōzushima is also known as "Kaiten Island".[4][5] |
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