I first remember going to the ocean in 1953. My baby sitter took me to Long Beach harbor and she paddled us out to an artificial island on a surfboard. This island was only a few feet above the water. I have visited the harbor many times since, and that island has not been submerged.
During prehistoric times the place I live in South Carolina was underwater. The beach from that time is over an hour driving time north of me. I see no sign of us going under.
When I was a kid I used to marvel watching the short travelogs on Saturday afternoon from the 50s and 60s showing how they reclaimed Florida beach property from the ocean. It’s now of the most expensive real estate in the world. I have heard no reports of Florida sinking.