Ancient Blue Diving Club (also known as A-BLUE) is a PADI-registered dive shop based in Hachobori, Naka-ku, Hiroshima, Japan, at 13-22 Hachobori (Plaza Building, 2nd floor). It offers easy day-trip diving around Hiroshima as well as tours to Okinawa, Ogasawara and other islands and overseas destinations. The shop runs courses for people new to diving as well as skill-building courses for certified divers, and its staff advise divers individually on choosing gear.