Given the mythological explanation, it is still possible that the myth is based on some historical event. There is for example a world-wide flood in Ovid's Metamorphoses which parallels but does not agree with the Biblical account in all respects.
He may be right about the geological history of the Black Sea, but this isn't Noah's Flood even given the mythological explanation. Too early.
Another theory is a tsunami in the Mediterranean caused by the volcanic eruption on Crete which destroyed the Minoan civilization around 3000 BC.
And if you like your theories wild, there is always Velikovski's Worlds in Collision scenario.
The 300-500ft sea level rise at the end of the last Ice Age flooded the continents sometimes hundreds of miles inland.
Take a look at this map of the world's oceans lowered by about 300 ft. Notice that there's no Persian Gulf, the Red Sea is land locked, the Mediterranean was seperated into at least three segments and I speculate that the Gulf Of Mexico was sealed off also, etc. That was a worldwide flood.
