I think you might refer to the continental shelf.....
The ocean has different zones that has plants and animals. The area along the ocean floor that consists of sand silt and dead organisms is called the benethic zone.
It is called a tundra.
an area where rivers rise and fall with ocean tides
The Appalachian Mountains cover up most of the area along the Atlantic Ocean.
The catchment or drainae basin is all the land from the mountain to to seashore, drained by a single river and its tributaries is called catchment area or drainage basin
This can be called the coastal zone or littoral zone. (the terms coastline and seashore are each one word)
The ocean has different zones that has plants and animals. The area along the ocean floor that consists of sand silt and dead organisms is called the benethic zone.
It is called a tundra.
an area where rivers rise and fall with ocean tides
The area of Canaveral National Seashore is 233.35 square kilometers.
The area of Cape Hatteras National Seashore is 122.698 square kilometers.
The area of Fire Island National Seashore is 79.233 square kilometers.
The area of Point Reyes National Seashore is 287.44 square kilometers.
The area of Gulf Islands National Seashore is 548.179 square kilometers.
The area of Padre Island National Seashore is 527.848 square kilometers.
The area of Cape Lookout National Seashore is 114.297 square kilometers.
The Appalachian Mountains cover up most of the area along the Atlantic Ocean.