Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Thalasso Biarritz Hélianthal is one of France's most celebrated thalassotherapy establishments, occupying a spectacular oceanfront position in Biarritz — the Basque Atlantic city where Napoléon III and Empress Eugénie created France's first fashionable sea-bathing resort in the 1850s and where pelota, surfing, and gastronomic Basque culture coexist in one of the Bay of Biscay's most dramatically beautiful settings. The center draws directly on the Atlantic's Bay of Biscay seawater — cold, mineral-rich, and with the iodine and trace-element concentration of the productive North Atlantic shelf — for comprehensive marine hydrotherapy protocols targeting rheumatic, metabolic, skin, and stress conditions. The Hélianthal's position on the Grande Plage, with the Art Deco Casino Municipal and the surf waves of the Côte des Basques visible from the therapy rooms, creates a thalassotherapy experience as stylistically iconic as the resort itself.
Insider tip — Biarritz was the pioneering capital of European thalassotherapy, where the Helianthal centre on the Grand Plage has drawn Atlantic seawater at 40°C since the tradition was formalised here in the 1960s. The powerful Basque coast swell and Atlantic iodine-laden air create an exceptionally bioactive marine environment for jet-shower and immersion treatments. The town's Belle Epoque seafront, surfing culture, pintxos bars in the Basque quarter, and views of the Pyrenees on clear days make Biarritz one of France's most complete wellness destinations. Book sea-facing rooms to wake to Atlantic sunrises over the Rocher de la Vierge.