Hirauchi Kaichu Onsen, nestled in the picturesque island of Yakushima, Japan, offers a unique beach experience unlike any other. Unlike typical sandy beaches, Hirauchi Kaichu Onsen is renowned for its geothermal hot springs that emerge directly into the ocean, allowing visitors to enjoy a natural hot spring bath while being caressed by the ocean waves. This remarkable beach does not boast the usual golden or white sand but instead offers a rugged, natural coastline that intertwines seamlessly with the clear blue waters. Activities at Hirauchi Kaichu Onsen are more serene and include soaking in the geothermal pools, exploring the nearby rock formations, and enjoying the tranquil scenery. Hirauchi Kaichu Onsen has few amenities, so plan your trip accordingly, although it does have breathtaking natural beauty and unique tidal hot spring baths.