What is an example of a coastal plain?

An example of a coastal plain is the Atlantic Coastal Plain. It stretches from New York City to the tip of Florida and includes parts of Alabama, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, and New Jersey. The Atlantic Coastal Plain is a low-lying, flat region with gently rolling hills. It is home to a variety of ecosystems, including salt marshes, barrier islands, and long stretches of sandy beach.