It melts, it freezes, it melts, it freezes.
Also, the southern sandy tip of Florida is slowly sinking!
Two Causes Are Global, and Two Are Local. Ice melting from land into the ocean, warming waters that expand, a slowing Gulf Stream, and sinking land all contribute to sea level rise. Although a global phenomenon, the amount and speed of sea level rise varies by location, even between the East and the West Coasts. Why don't we ever hear about land sinking??