The natural beach and underwater garden in Bawean island has become main tourist destination for all visitors. Bawean has amazing destinations which located on North Sea, Gresik region-East Java. It saves a lot of nature tourism with it’s wonderful scenery. Even though, Bawean said as the hidden pearl in Java sea. Beside it’s marine destinations, Bawean also has Kastoba lake which located in the middle of 99 hills of Bawean.