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Fuji-Hakone-Izu NP, Tokyo
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In a 2023 ranking based on Environment Ministry measurements, Tomari was among 5 beaches tied for the lowest COD reading: less than 0.5 mg/L. COD measures organic pollution in the water.
Tomari’s fan-shaped cove is more than a wave-carved beach. About 10,000 years ago, hot lava reached the sea; its contact with seawater triggered explosions that helped form rounded bays like this one.
In 2001, Tomari was selected for the Environment Ministry’s “88 Selected Bathing Beaches,” chosen from 146 candidates. Judges considered water quality, scenery, environmental care, safety and convenience—not beauty alone.
Tomari’s 2001 selection record also noted a local effort: before the swimming season, the tourism association and residents cleaned the shore together. It praised the shallow, clear inlet, where children could spot crabs and shellfish among the rocks.
Long before bathers, Tomari sheltered vessels waiting for favorable winds, including boats carrying exiles toward Niijima and Hachijojima. Local tradition adds that defeated warlord Ukita Hideie waited here on his way to exile.
Tomari’s early fishing-port works began Japan’s national subsidies for fishing-harbor construction. Parts of the old Namako Pier and stone boat ramp still survive by the beach; Niijima Village designated the pier a historic site in 2018.