The Kerama Islands consist of over 20 large and small islands 30-40km west of Naha City. The clarity of the water in the ocean here is world class, and the color of the ocean is known as “Kerama blue”. Various tropical fish swim between colorful coral reefs. The underwater scenery is unlike anywhere in the world, and you will no doubt understand why the sea here is a world famous destination for divers. You can also enjoy superb views without diving into the ocean. Visit the observatories on Tokashiki Island, Zamami Island, Aka Island, and Geruma Island and you will be treated to magnificent views when the morning sun and moonlit nights reflect off the sea.