A.
It has been clearly demonstrated that effective protection of the oceanfront and adjacent coastal areas against high tides and flooding and against damage by the ocean under storm conditions requires sufficient elevation and breadth in the dune area hereinafter defined, together with berms, beaches and underwater slopes of proper grade, height and configuration to dissipate the force of the waves, and the state and its subdivisions and inhabitants have an interest in the continuous protection thereof and in the right to require, regulate, build and restore such protective measures or devices as may be deemed necessary by the governing bodies thereof.
B.
Dune areas are vulnerable to erosion by both wind and water, but primarily by the wind, since its attacks against the dune areas are sustained for substantial and frequently recurring periods of time, whereas, if protected by typical berms, beaches and underwater slopes, the dune areas are attacked by water only at infrequent intervals. The best available means of protecting dune areas against wind erosion is by preventing indiscriminate trespassing, construction or other acts which might destroy or damage the dune areas, and through the use of native plantings supplemented by sand fencing and other devices designed to prevent the free blowing of sand and the maintenance of the surface tensions, root accumulations, normal contours and other features found in typical natural dune areas.
C.
The beach dune areas hereinafter defined are necessary for the continuation of the protection above outlined, and persons owning or purchasing property within the beach dune areas do so subject to the public interest therein.