The Blue Cave is located at Cape Maeda in Onna village in Okinawa.The Blue Cave has been visited by many tourists from not only domestic, but also overseas every year. It became the most popular diving & snorkeling point in Okinawa. There are some reasons why the cave is called the 'Blue Cave'. When sun lights come into from the entree, it reflects sands on the bottom of the sea through seawater. This effects like light-up create a fantastic blue world. Those miracle can be seen only with extremely clear sea water and white sands.