Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
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Dense, salty water — you float without effort.
SodiumChloruresBrome
Motobu Onsen is situated near Ocean Expo Park, home to the Okinawa Churaumi Aquarium — one of the world's largest, celebrated globally for housing whale sharks and manta rays in a single massive tank and pioneering the breeding of whale sharks in captivity. The Motobu Peninsula juts into the East China Sea between Nago Bay and the islands of Sesoko and Ie-jima, the latter famous for its lily festival and as the site where American war correspondent Ernie Pyle was killed in 1945. The onsen's mineral waters provide a calming end to days spent exploring both the wonders of the deep sea and the complex wartime history woven into Okinawa's northern landscape.
Insider tip — Motobu Peninsula in northern Okinawa is home to the Ocean Expo Park and the Churaumi Aquarium, one of the world's largest, making the local onsen a natural end to a day of marine discovery. The sodium-chloride spring water in Motobu has a warming, skin-softening quality that locals attribute to the coastal mineral composition. The nearby Nakijin Castle ruins, a UNESCO World Heritage Site, add a historical dimension to the visit. The peninsula's elevated position offers panoramic views across the East China Sea to the offshore islands of Sesoko and Ie.
