SB 636 strengthens Florida's beach management. The state must use data on beaches that are repeatedly repaired and funded. If a beach has upkeep deals, faces frequent flooding or damage, and the local government has set aside money, it must be labeled critically eroded and can get more state aid. DEP may require coastal local plans using storm, property, and expert input. Low-lying areas behind dunes may be named critical state concern areas, triggering tighter building and flood protections.