Just my 2 cents - here in South Carolina we are known for our fossil and artifact diving. We have a very comprehensive law that I feel is fair to both the state and the divers. The program is managed through the state's depart. of underwater archeology and anthropology. They administrators work well with the divers and many finds of historical importance are reported to the state that otherwise would not be. All the state asks is that you do a quarterly report and make your finds available to photograph and study, also brief on where the objects were recovered. There's a minimal cost for the license that a diver must carry and if you fail to make reports you might have dificulty renewing the license.