・About Okinawa PrefectureIt is the southernmost prefecture in Japan and consists of many islands. It is also famous as Japans premier resort city. Currently, the decline of coral reefs due to bleaching due to the effects of global warming is becoming a problem.・About this appIt conveys the current state of coral reef decline and the appeal of coral reefs. This app is a combination of a quiz app and a tourist guide app.In the quiz mode, you will be asked a 4-choice quiz about coral reefs, and questions will be asked about the dire current situation of coral reefs and little-known secrets.In tourist guide mode, you can use quiz mode to find tourist attractions where you can see coral reefs that interest you. By actually seeing it, you will realize the beauty of coral reefs.・People recommended for this appPeople who want to visit Okinawa PrefecturePeople who want to know about coral reefs