Re “yammering.”
It seems that European trained anthropologists and paleontologists have tended to ignore the possibilities of underwater research for the Ice Age periods. I don’t know whether this is tunnel vision or lack of grant money to explore under water which can be quite expensive. Graham Hancock has done a lot to spark interest in searching underwater with his books and he has a Graham Hancock Forum. I think that treasure hunter Ballard has gone in with some academic types on a project to explore off shore of Texas in the Caribbean.
Ballard is primarily known for underwater research. There is a topic (or two) about his participation with Gulf of Mexico research, and of course, he found those Phoenician ships off Israel five or more years ago, and a Byzantine ship in the Black Sea, among other things.