| 1．Shiraishi Island |
| Shiraishi Island (白石島, Shiraishi-jima) is an island in the Inland Sea of Japan and is considered part of the municipality of Kasaoka, Okayama Prefecture. It is one of six inhabited islands in the Kasaoka Islands, a chain of islands most easily reached from the port city of Kasaoka on Japan's main island, Honshū. |
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| 2．Manabeshima |
| Manabeshima (真鍋島, Manabe-shima) is an island in the Seto Inland Sea, part of the municipality of Kasaoka, Okayama Prefecture, Japan. The island has an area of 1.49 kilometres (0.93 mi) and is one of the seven inhabited islands of the Kasaoka Islands group. The island's main commercial activity is fishing. |
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| 3．Tsuru Shima |
| Tsuru Shima (鶴島) is part of Okayama Prefecture, Japan. It is a small, uninhabited island located in the Inland Sea of Japan, hidden from the land by the much larger Kakuijima, and approximately 6 km off the border of Hyōgo and Okayama prefectures. During the early Meiji Period the island was used as a penal colony for Christians.[1] The name means literally "Crane (bird) Island". |
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