The moment you cross the 1,780-meter Tsunoshima Bridge, the view opens onto a horseshoe bay where the sand glows bone-white against water in shades of cerulean and teal. You'll kick off your shoes at the northern end of Ohama Beach, where the shoreline extends in a gentle crescent and the bottom stays shallow for what feels like forever—children sprint through ankle-deep water fifty meters from shore while their parents set up beneath rented parasols.
“The iconic Tsunoshima Bridge frames every swim, its elegant span hovering just above water that gradates through five distinct shades of blue.”
Credit: UnsplashTropical island lagoon from above
The bridge itself, completed in 2000, dominates every photograph, its low-slung concrete span hovering just above the waves. But you'll notice the water first: the Sea of Japan here runs warmer and calmer than the northern coast, and on windless mornings the surface mirrors the sky. Sandbars appear at low tide, creating temporary islands where gulls gather and toddlers hunt for shells.
Local families arrive early on summer weekends, claiming spots near the concrete changing rooms and small beach house selling shaved ice and yakisoba. You'll find the best swimming on the bay's western edge, where the water deepens gradually and the current stays gentle. By late afternoon, the sun backlights the bridge, turning its shadow into a dark slash across water that glows amber and rose.
