The answer depends on which method you use to determine the coastline. If you use the general coastline method, then Florida has the longest coastline on the Atlantic Ocean with 580 miles. North Carolina is second with 301 miles of general coastline. Maine is third with 228 miles of general coastline. If you use the tidal coastline method, then Maine has the longest coastline on the Atlantic Ocean with 3,478 miles. North Carolina is second with 3,375 miles of tidal coastline and Florida is third with 3,331 miles of tidal coastline.
Florida has a total shoreline of approximately 8,436 miles, including tidal shorelines along the Atlantic Ocean and the Gulf of Mexico. This extensive coastline makes Florida the state with the longest coastline in the contiguous United States.
Maine
Florida
Coastline:* 397 miles (6) Tidal shoreline:* 7,721 miles (6) * Coastline refers to the general outline of a state's sea coast; tidal shoreline refers to the coastline, as well as offshore islands, sounds, bays, rivers, and creeks measured to the head of tidewaters or to a point where tidal waters narrow to a width of 100 feet.
Maryland has more coastline than boundaries. It has a shoreline along the Chesapeake Bay and the Atlantic Ocean, totaling around 3,190 miles of tidal shoreline. Maryland shares land boundaries with Pennsylvania, West Virginia, Virginia, and Delaware.
The tidal current in the Orkneys is known as the "Atlantic Orkney Tidal Stream."
The River Bann flows into the Atlantic Ocean. It is located in Northern Ireland and is the longest river in the country, eventually emptying into the ocean at the town of Coleraine. The river's estuary is influenced by tidal movements from the Atlantic.
Tidal energy depends on the change of tides in the ocean. Unless a desert is along a suitable coastline there would be no tidal energy to harness in a desert.
Rehoboth Bay is located in the State of Delaware. It is linked to Indian River Bay to the south and it provides tidal exchange with the Atlantic Ocean.
Total "General U.S. Coastline" is: 12,383 miles This INCLUDES Alaska and Hawaii See chart linked below for "Tidal Shoreline" Coastline of the United States - Infoplease.com
Barrier islands form as the result of wave or tidal flow parallel to a coastline.