Valuable properties with powerful owners control vast sections of coast so governments, in their thrall, build enormously expensive seawalls that inevitably speed the erosions of beaches, which are replaced artificially at mounting cost. It’s the vicious cycle of sunbathing, and Orrin Pilkey says it’s a loser’s game. Miami is doomed.
How much would it cost to build 3,000 miles of seawall along the East Coast of the U.S., not to mention the rest of the world? On a barrier island, you have to build seawalls on all sides of the island. Where are we going to get the money for that? Then the problem becomes that seawalls destroy beaches. We saw this back in the early ‘70s in Miami Beach, where basically there was no beach left, before they nourished it.