If you come to Koren and are tired of going out to sea, there is actually a quiet place where you can enjoy the sea view while soaking in the hot spring. Makuuni Hot Spring is a salty sea water hot spring. I believe you have never experienced it. Find a tutu car in the town and tell the driver that hot spring is fine, about half an hour's drive. The hot spring tickets are very cheap. There is almost no one in the morning. You can sit on the entire sea view. The open-air warm pool is surrounded. The salt water temperature between 30-45° can be passed through the trestle next to it after hot. Go to the sea outside the mangrove forest about 30 meters. This sea area is open, the trestle is not high in the opposite position, about half a meter deep, the water temperature is relatively low compared to the warm pool, you can soak for a while, and the cold and warm alternately have the feeling of taking a Finnish bath.