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Send Mail from Susami Bay Underwater Mailbox, Susami, Wakayama, Japan

Susami Bay in Japan is home to the world's deepest underwater postbox, which is 33 feet (10 meters) below the water's surface. In the year 2002, the Guinness Book of World Records recognized this 10-meters-deep, underwater, red postbox in Susami Bay, Japan, within which approximately 32,000 pieces of mail have been posted to date.
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