In this Wednesday, September 18, 2013 photo, two dolphins perform in a tank at Okichan Theater of the Okinawa Churaumi Aquarium in Motobu, on the southern island of Okinawa, Japan. Okinawa is Japan's southernmost prefecture and more than 300,000 foreign tourists visit to Okinawa every year. (Photo by Eugene Hoshiko/AP Photo)
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