"I have personally found mastadon teeth in 130 feet of water 45 miles offshore Jacksonville, Florida."
Interesting, and I'm not doubting you on that but how would you explain the setting of Ostia (where I've actually been). It was built about 2500 years ago and hasn't been touched for many, many years. There is simply no way the sea level could have been 92 feet lower than today.(and the Mediterranean is directly connected to the Atlantic, of course) Venice is another example, the foundation (street) level was established a little over 1000 years ago and has changed much less than one storey, not 37 feet.
There may be anomalies here and there but the general claim does not ring true to me.