Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Hachimori Isaribi Onsen Hatahata-kan is a hot spring facility in Happomachi, Yamamoto County, Akita Prefecture on the Sea of Japan coast of northern Honshu, operated by a third-sector company under the name Hatahata-kan, named after the hatahata, the sandfish that is the iconic culinary symbol of Akita Prefecture. The facility underwent a major renovation in July 2007 to add lodging capabilities, and in 2006 the adjacent retail facility Buriko opened for the sale of local marine and agricultural products, making the complex a comprehensive rural tourism destination combining thermal bathing with regional food culture on the Sea of Japan coast. Hatahata is a prized seasonal fish that appears in Akita's coastal waters in winter and features prominently in local cuisine and traditional culture, making the naming of this hot spring after it a celebration of the deep connection between Akita's people and the sea that has sustained them for generations.
Insider tip — Hachimori Isaribi Onsen Hatahata-kan sits on the Sea of Japan coast in northern Akita, named after the hatahata thunder fish that spawns in these waters in late autumn. Salty sodium-chloride spring water is drawn from moderate depth and retains heat superbly, ideal for warming up after winter squid-fishing boat excursions. The ground-floor bath has plate-glass windows facing the grey winter sea, creating a dramatic contrast of warm water and cold ocean spray. Local fishermen use the baths after pre-dawn hauls, so an early-morning visit gives genuine local color.