Photo Credits: Startup Pakistan
Since 2002, there has been a mailbox in the ocean not far from the coast of a particular nation. This postbox, which is located at a depth of 10 meters, is the one that currently holds the Guinness World Record for being the deepest underwater postbox. It was formed in 1999 to promote the ancient Kumano Kodo pilgrimage trail and the surrounding landscapes in the southern portion of the Kii Peninsula, which is located in Wakayama.
Every year, something in the range of 1,000 to 1,500 pieces of mail is delivered to this underwater letterbox. A person at the Yamatani Dive Shop collects the mail. Two iron boxes are used alternatingly once every six months to safeguard the mailbox from the corrosion caused by seawater. The other box is being utilized throughout the process of cleaning and repainting the first box.
People can write their sentiments on water-resistant postcards they buy from the diving shop and then write using an oil-based paint marker. Within a week of posting, the objects deposited in the postbox are delivered to the persons they were addressed.