From Parks Canada:
"Research at a site on Richardson Island related to rising sea levels and continental rebound revealed stone and bone artifacts excavated from archaeological deposits up to 5 m thick. Most of the artifacts date from about 10,500 to 9,500 years ago, a time when sea levels may have risen by as much as 5 m over the course of a person’s lifetime."
Old King Canute is reputed to have set his throne up on the tidal flats of England and commanded the ocean to stop moving. It didn't. He decided to move too. The precious snowflakes who want the world to stay just exactly the way it already is will have to move too or be over-run. Maybe a few election cycles from now we'll get relief.
Adapt or die.