The National Historic Preservation Act requires federal agencies to protect historic and cultural resources which include shipwrecks, historic fortifications, and coastal settlements, as well as prehistoric sites that have become submerged due to the global and local rise in sea level. As a federal agency, the MMS must protect the significant archaeological and historic sites that maybe impacted by its activities. In addition, regardless of the historical significance of a shipwreck or site, these structures provide fish habitat and are considered potential Essential Fish Habitat. These structures can, and in many cases do, support sport fishing and diving industries