The coast, also known as the coastline or seashore
The Edge of the Sea was created in 1955.
it got published in 1962.
On the Edge of the Dark Sea of Darkness was created on 2008-03-18.
The Edge of The Sea
You may be referring to the "shore." Sometimes, but not always, the shore is a "beach."
A leaf's edge is called its margin.
The centre of a circle is simply called the cnetre. The edge may called the perimeter, the circumference or the edge.
The top edge of a glass or cup is called the rim.
The outer edge of a circle is called the circumference.
It is called an edge: there is no special name.
The Calm at the Edge of the Sea - 2006 was released on: USA: 19 May 2006 (Mendocino Film Festival)
The edge of a mountain cliff is called a precipice.