A person may possess a shark fin that was taken lawfully under a State, territorial, or Federal license or permit to take or land sharks, if the shark fin is separated from the shark in a manner consistent with the license or permit and is—
(1)
destroyed or discarded;
(2)
retained by the license or permit holder for a noncommercial purpose;
(3)
used for noncommercial subsistence purposes in accordance with State or territorial law; or
(4)
used solely for display or research purposes by a museum, college, or university, or other person under a State or Federal permit to conduct noncommercial scientific research.