I have a friend who lives in Madeira Beach, Florida. She has lived there for 30 years. When she originally about the house I was about three feet above sea level. Now it's more like two and a half feet above sea level. Last year alone the seas rose almost an inch, the rate at which the seas are rising is accelerating. I don't think we have 50 years left before most of the coastline infrastructure is threatened.
That's not true at all. What has happened is Florida has been cutting down on the amount of sand they use to replenish the beaches.
That IS man caused though. All the streams and rivers have been dammed up which has stopped the flow of sand to naturally replenish the beaches.
A problem that has been had to be dealt with for over 75 years.