The world’s only underwater post office is located in the Hideaway Island marine sanctuary in the Republic of Vanuatu. Situated in the South Pacific, the post office is 50 metres offshore and three metres below the water surface. Divers and snorkelers can post special ‘waterproof postcards’ from this post office. If snorkelers find it difficult to duck-dive down that depth, Hideaway Island staff help them out.
An underwater post office
