Well, I wish I'd known this earlier. Apparently, you can make a career as a treasure hunter, even in these modern times. Though it's not easy, as the Columbus-America Discovery Group learned when they went into receivership after collecting sunken treasure from the S.S. Central America. Their lawyer -- and I suppose lawyers are a type of treasure hunter as well -- moved to claim some of that gold himself as a reward for his aid in "the continuing salvage of the sunken" treasure fleet.
Sadly, the Fourth Circuit didn't find attorney Richard Robol's contribution to be as worthy as he claimed. His "contribution to the recovery" was largely what was required from him by law and his professional duties -- it was not the voluntary assistance that could afford him salvage rights, the Court found.