As with most shorelines around the world, New Jersey beaches are slowly, but inexorably, being eroded, threatening coastal structures and development. In some years more sand is deposited than removed, but all of the state's monitoring devices show that sea level is gradually rising and pushing the New Jersey shoreline inland. The shore is a valuable resource, and its natural, cultural, and economic attractions draw a multitude of permanent and temporary residents each year, extending housing and commercial development onto areas that were once swampland. Not surprisingly, development at the...