There is none. There is, in fact a difference, although minuscule. Shoreline refers to the edge of the shore, the shore being the stretch of dry land just before a body of water. Basically, where the beach ends. The shoreline is flexible and changes with the tides. The coastline is often used to refer to the shoreline, but in a more technical sense is the boundary where the continent ends. This is not the shoreline, but the end of the continental plate, usually referred to as the Drop-Off (remember 'Finding Nemo'?). This can be a couple hundred yards from shore, several miles, or at the shore, if something has recently broken off or there was an earthquake. Coastline is really the boundary of the continent while the shoreline is the boundary of the land. Another new answer Coastline ALWAYS refers to land/water boundary of continental entities. Shoreline refers to land/water boundaries of ANY sort i.e. rivers, lakes, seas, oceans where land gives way to water of some sort.
A beach is a gentle slopy land and a seashore is a land where the sea cant reach
Shoreline
397 miles of coastline and 7721 miles of shoreline
Shoreline is where land and a body of water meet and longshore is a movement of water parallel to and near to the shoreline.
Prograded coastline is when water has withdrawn from parts of the land surfaces due to fall in a sea level to land and Retrograded coastline is a coast where sediment is deposited but still the shoreline is shifting landward.
The length of the Polish shoreline is approximately 440 kilometers.
The ocean coastline or shoreline of Texas on the Gulf of Mexico.
The ocean coastline or shoreline of Texas on the Gulf of Mexico.
No country can border a coastline, especially the East coast of Australia, a shoreline of the Pacific Ocean.
No country can border a coastline, especially the East coast of Australia, a shoreline of the Pacific Ocean.
It is called the coastline, or also called the seashore.
The tidal range is the vertical difference between the high tide and the succeeding low tide.
The South Pacific Ocean lies off the western coastline of Chile.