Vanuatu Post has created an official Post Office with a difference. It is the world’s only Underwater Post Office.  

Situated within the Hideaway Island marine sanctuary, the Post Office is staffed by Post Office personnel who completed their Open Water dive training at Hideaway Island.As the bottom of the post office sits in around three metres of water both divers and snorkelers are able to post special “waterproof postcards”. If snorkelers cannot duck-dive down that far, Hideaway Island staff will be on the spot to help out. 

I never expected to have such post office. But, on either ways, I got amazed of the new idea. Maybe it was just from a wild imagination.