I dont know the details of it all nor the finer implications that stem from it.
Im just saying I do believe that what the Bible states is true.
There are extra biblical accounts of a worldly flood. The Epic Of Gilgamesh being the most famous example. Disregard that and there is still a plethora of flood "myths" that permeate every culture.
List of flood myths - Wikipedia, the free encyclopedia
I dont deem this to be a coincidence. "The Eight Immortals" is one in particular and one of Chinese origin which basically is a tale of how eight beings sailed from heaven and formed the Chinese race.
I do believe the Sumerian account with The Epic Of Gilgamesh to be the most revealing, however, seeing how Sumeria was the first civilization constructed by mankind post-deluge according to Biblical history along with secular history. This is also where the people of were scattered acroos the earth after constructing the tower of Babel therfore taking the history or tale of the flood along with them which explains why every culture speaks of the same ancient cataclysm