Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Hirahata Onsen is set in Misawa, Aomori Prefecture, in northern Japan. Its sodium-chloride spring at 42°C feeds an indoor bath, an outdoor rotenburo pool and a sauna.
Insider tip — Hirahata Onsen, the flat field spring, serves the eastern Misawa coastal plain where the outlet of Lake Ogawara creates one of Japan finest surf beaches on the Pacific. The Ogawara Lake complex is an internationally significant wetland where freshwater and coastal brackish systems intermix, supporting migratory waterfowl populations on the East Asian flyway and the razor clam and smelt fisheries that have sustained the Misawa coastal communities through the cold Aomori winters.