S.C. Code Ann. § 54-7-660: No license required for non-disturbing inspection and study.

A person may inspect, study, explore, photograph, measure, record, conduct a reconnaissance survey, use magnetic or acoustic detection devices, or otherwise use and enjoy a submerged archaeological historic property and/or submerged paleontological property without being required to obtain a license if the use or activity does not:

(1) involve excavation, destruction, substantive injury, or disturbance of the historic property, a paleontological site, or its immediate environment;

(2) endanger other persons or property; or

(3) violate other regulations or provisions of federal, state, or local law or ordinance.