This story has to be read several times to understand!
http://uk.news.yahoo.com/030704/80/e3pix.html
Snail mail, email and now ... whale mail?
SYDNEY (Reuters) - The small Pacific island state of Vanuatu has opened what it says is the world's first underwater post office.
Planted on the seabed under three metres (9 ft 10 in) of turquoise sea in the Hideaway Island marine sanctuary, the fibreglass kiosk is manned by postal workers in diving gear and sells waterproof postcards.
"Marine life and water are very important to Vanuatu and tourism is pretty important so we just thought we'd see what we could do to boost tourism, do something different and have a bit of fun," Ian Hollins of Vanuatu Post told Reuters on Friday.
"When you're out snorkelling it's quite an easy duck dive and you're there," Hollins said from the tropical state of 80 islands and 190,000 people, 2,250 km (1,400 miles) northeast of Sydney.
The submarine post office is open for one or two hours a day, depending on how busy it gets, and has a special underwater franking machine that embosses the plastified postcards.