I always remember Vanuatu as that crazy country with the really fun stamps when i was little. Well oO posted some great links over at .org - they actually have an underwater post office, as well as a mailbox on the edge of a volcano! I’m ready to try to make my next dive trip to Vanuatu just so that i can write a letter on waterproof paper (like what nalgene had) with my waterproof pen, and mail it in a waterproof envelope from under the sea.