[fallingfrog]

The land where you are might be uplifting due to glacial rebound or for some other reason, or sediment is being deposited, lots of things can cause the sea level to drop in one place which has little to do with rising average sea levels globally. I encourage you to do some research and find the reason the coast is farther out now in your area- I’m confident you’ll find a good reason and it will probably be pretty interesting!