Discover post offices located at the bottom of the ocean.

Nowadays, with internet-based communication becoming commonplace in our lives, sending letters has probably faded into oblivion. However, in many parts of the world, underwater post offices are still operating and thriving.

It may sound strange, but around the world, many places have developed this service and attracted the attention of countless tourists. This creates a unique experience for visitors to these locations. Below are five places around the world that offer this unique postal service.

Hideaway Island (Vanuatu)

The underwater post office off Hideaway Island in Vanuatu is one of the most famous post offices in the world. Established in 2003 and located 3 meters below the surface, it is also the world's first underwater post office. Here, they provide waterproof postcards, and tourists can either drop them into the submerged postcard box themselves or request that staff do it for them.

At a certain time of day, a postal worker wearing an oxygen tank dives down into the mailbox, retrieves the postcards, stamps them with a special embossing device while still underwater, and sends them.

Green Island (Taiwan, China)

Inaugurated on May 4, 2018, off Green Island in Taitung County, southeastern Taiwan (China), this mailbox was built with the aim of promoting marine conservation and attracting more tourists from within and outside the region. Located 11 meters below sea level, the 1.8-meter-tall mailbox is shaped like a rare small seahorse species that commonly lives off the coast of this island.

Pulau Layang (Malaysia)

Located 40 meters below sea level, the mailbox at Pulau Layang-Layang, Malaysia, holds the record for the world's deepest mailbox. Postcards sent from here are reportedly sealed with a special waterproof postage stamp and bear the logo of the Malaysia Book of Records project.

Risor town (Norway)

Located off the southern coast of Norway, this mailbox is made from a diving oxygen supply bell and is the world's only underwater dry post office. It sits at a depth of 4 meters near a pier. When visitors arrive at the pier, they place their letters or postcards in a waterproof bag and then lower it into the water. Inside the mailbox is a dry environment, where letters and postcards are stamped and sent as usual.

Susami Bay (Japan)

Created in 1999 as part of a fair promoting the Kumano Kodo road and surrounding areas in the southern part of Wakayama's Kii Peninsula, the mailbox initially received little attention. It wasn't until Toshihiko Matsumoto, then the town's postmaster, proposed the idea of ​​a mailbox located 10 meters underwater that the Susami mailbox officially gained widespread attention.

At this mailbox, divers buy waterproof postcards at a local store, write messages on them with oil paints, and drop them into a red mailbox located underwater. Every few days, a store employee dives down, collects the letters from the mailbox, and takes them to the local post office. The mailbox receives between 1,000 and 1,500 letters annually, and 32,000 letters have been sent through the underwater mailbox since its creation.

Anh Thi