Alright, yes I agree Atlantis is all great and wonderful ut let's rememeber this is a game here. Think about it, while the other civs are starting out, just dsicovering the wheel the leader of Atlantis is trasmitting from a secret under water base?
What challenge would the game be if that were true? Each civilization in the game started out at different times and was advanced in thier own way. Modern science shows that egypitians had batterys mad of clay pots, iron rods, and acidic wine. So does that mean they should start off with electricity?
However, it is possible to mod the game in a way that allows cities to be built on water tiles. I am thinking I may add that ability to my mod. I may restrict it to sea squares though since ocean squares would allow rampid expansion all over the globe.