If I'm going to put on my bible beliving hat, I will say the whole earth was flooded. There are lots of people on the net who believe that and will explain why.
But you can believe anything you want and find documentation for doing so.
Today, there is a lot of emphasis on a pole shift coming around 2012 when the Mayan callender runs out.
If that happens we will probably have another world wide flood. And some people say these pole shifts have been happening through out time.
People that believe in reincarnation have been hypnotised and claim to have lived in Atlantis.
Check out Edgar Caycee, he didnt start out believing this or even believing in reincarnation but he had a pschyic ability that he shared with others and the people that he dealt with were voluntering this information.
The legend of Atlantis may have been mans great civilization before the last pole shift aka the flood of the bible.
Anyways I'm here till about 2032 and I doubt I will figure it all out before then.