Oh my God! I think we need a definition of beach. I lived in Oregon from 5th grade until 2 years post high school graduation. Three of those years were in Tillamook. (Yes, where the cheese comes from). In Oregon no one can "own" ocean beach property -- it is all public. Some of their beaches are a mile wide with hughmungus sand dunes.
When I came to San Francisco in 1957 and went to "The Beach" was I surprised. The sand is actually tiny little rocks and not very wide nor long.
When we started diving for Abalone in the '60's there were few beaches. High cliffs fall right down to the breakers. After sliding, jumping, falling, etc., down the face of the crumbling cliff we were lucky to find a cove with a patch of some kind of dry ground. All of these places were called "beaches."
I've never been there, but the picture's I've seen of Coney Island and the Mediterranean have big beaches but they also have jazillions of people so each person only has a patch of beach.
How much beach do you need to call it a beach?
(Now I'll take my tongue out of my check)
I love the beaches in Belize. They are all I need.