There are probably tens of thousands of sites like these underwater somewhere. The oceans were almost 400 feet below current sea levels then.
People have always used beaches and inlets as food sources. Many people lived on the shore. The shores of those times are many miles out to sea in our time.
I’d be fascinated by our own continent’s off shore discoveries. If people had boats to settle Australia 50,000 years ago, they had boats to travel down North America’s Pacific coast.
The underwater pyramids in Cuba have me fascinated. I wish they would allow this to be explored further. This site would have been from before the gulf was flooded. This would be a timeline that is considered impossible by the current official narrative.