What is Atlantic Plain?
The '''Atlantic Plain''' is one of eight different United States [[Physical geography|physiographic]] (Physical part of) regions. The Atlantic Coast of the United States comprises the coastal states of [[Delaware]], [[Florida]], [[Maine]], [[North Carolina]], [[Maryland]], [[New Jersey]], [[New York (state)|New York]], [[South Carolina]], and [[Virginia]]. The land next to the Atlantic coast are made up of sandy [[Beach|beaches]], [[marshlands]], [[bays]], and [[Barrier island|barrier islands]]. This big part is made up of the Continental Shelf and Coastal Plain provinces. It is the flattest of the U.S. physiographic divisions and is over 2,200 miles (3,500 km) in length from [[Cape Cod]] to the [[Mexico|Mexican border]] and goes south an additional 1,000 miles (1,600 km) to the [[Yucatán Peninsula]]. The [[wikt:central|central]] and southern Atlantic Coast is seen by [[Drowned valley coasts|barrier and drowned valley coasts]]. The coastal Atlantic plain features long barriers interrupted by inlets, large [[Embayment|embayments]] with drowned river valleys, and extensive [[Wetland|wetlands]] and marshes. The Atlantic plain slowly lowers to [[sea level]] from the inland highlands in a series of [[Terrace (agriculture)|terraces]]. This continues far into the [[Atlantic Ocean|Atlantic]] and [[Gulf of Mexico]], forming the [[continental shelf]]. The difference at the land-sea interface is so hard to see that the boundary between them is often indistinct(hard to see), especially along stretches of the Louisiana bayous and the Florida [[Everglades]]. == Coastal Plains == The '''Atlantic Coastal Plain''' is a [[region]] of low [[elevation]] along the [[East Coast of the United States|East Coast]] of the [[United States]]. It is 2,200 miles long, from [[Long Island]],<ref>{{Cite web|title=The Atlantic Coastal Plain|url=http://www.geo.hunter.cuny.edu/bight/coastal.html}}</ref><ref>{{cite web|url=http://www.blm.gov/wildlife/pl_03sum.htm|title=South Atlantic Coastal Plain|url-status=dead|archive-url=https://web.archive.org