Interesting as I believe there are also a number of areas that were uncharted shallows that are no longer in existence certainly if a sandy island of that size can erode then areas of the Florida coast can also disappear over time, the Romans map shows area of the Florida coast that seems to have also disappeared.
There is an area around one and half miles long that has seems to have wreckage uncovering I believe this was very shallow and uncharted during the plate fleet period and may be the cliffs referred to in some of lost fleet reports, or were people were rescued offshore.
I went to dive after the Hurricane 2019, and it seems to have been buried again.
Also unfortunately the people that done the survey did not under stand the importance of position and straight line survey, it took me a week to figure out they were just driving around and you know when you tow a fish lay back and depth is one thing but if the fish is on the path of a circle then it is not were the software thinks it is, they basically did a big oval and filled in the areas that did not show green on the screen, I dived in a number of locations that there were targets and there was nothing but sand. Ther are plenty of mag hists in the area also, anyone every find anything offshore withing the area of the 1715 fleet.