Andrew “Red” Harris Foundation – Palm Beach County Artificial Reefs There are three general approaches to building an artificial reef. All approaches are restricted to ocean areas that have been permitted by the Army Corps of Engineers for artificial reef construction (because the permitted areas have little or no live natural reef in their boundaries). Create a Wreck By Sinking a Retired Ship Construction Debris or Limestone Boulders Concrete Reef Modules, Reef Balls & Reef Balls REEF CELLS Coral Reef Replica Modules