Mikuni Takara Island West
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Bikuni Treasure Island in Shakotan, Hokkaido, is a boat-entry site 5–10 minutes from Bikuni Port. Known for its clear “Shakotan blue” waters, it features dynamic terrain with columnar joints, crevasses, and tunnels.
Bikuni Treasure Island hosts mebaru, soi, and sculpin, migratory yellowtails and flounders, occasional sea tanago schools, plus nudibranch-rich rock and coral ecosystems.
