Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
A timelapse of the coast of Chatham, Massachusetts, showing the changing shoreline. Created with Landsat imagery using Google Earth 3D Timelapse. Courtesy of Google.
Timelapse courtesy of Google
