Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Kanaya Myoekyo Onsen, an onsen in Aridagawa, Wakayama, offers a soak in thermal sodium-chloride water at 39°C, alongside an outdoor bath (rotenburo) and a sauna.
Insider tip — Kanaya Myoekyo ('marvellous-reflection mirror') Onsen in the Aridagawa area of Wakayama, in the mandarin orange heartland of Japan. Another spring in the Arida river valley that also hosts Aridagawa Onsen Hikari no Yu. Pick up local mikan at roadside stalls and soak in the sodium-rich waters warmed by Wakayama's deep geology.