straight away without thinking i'd say the Caribbean sea!
I would realy feel like i as if i were in a dream i think, i'm even sure that it has a chance to only stay one, as i don't see myself getting over there sometime soon!
I would love to go to Australia, there's so much to see land wise as well as sea wise. It's an all time dream. the east coast looks like one of the best places in the world for diving and discovering what the most beautiful things the sea can hide