The coastline is the outline of a coast from state to state. It is usually pretty rugged, and from an airplane it is easily established what is land and what is the ocean.
Costlines are coastal land forms
Asia
No, it is inland.
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Alaska does.
Maine
All the edges of the continent are coastline.
Japanese coastline is 29,751 km long.
Oregon
awnser the question someone
The coastline is the boundary where the land meets the ocean or another large body of water. It is the area where the land and water interface, including beaches, cliffs, and other coastal landforms. It can be dynamic and change over time due to natural forces like erosion and deposition.
As West Virginia is a landlocked state, it does not border any oceans.
Chile has the longest Pacific coast line in S.A.