"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 sits in around three metres of water and both divers and snorkellers are able to post special 'waterproof postcards'. If snorkellers cannot duck-dive down that far, Hideaway Island staff will be on the spot to help out. During opening hours the cards will be cancelled/embossed by the postal staff in the Underwater Post Office. Instead of being stamped with ink to show that the card has been sent, the Post office has developed a new embossed cancellation device."
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