S.C. Code Ann. § 50-5-1005
(B) The department may grant permits to persons to import molluscan shellfish, shellfish tissues, or shells into this State. Permits may include conditions related to:
(7) other matters which are considered important by the department to the protection of the natural resources of this State.
A person who imports molluscan shellfish, shellfish tissues, or shells into this State for placement into state waters or waters connected to state waters must first acquire a permit from the department.