Especially bad when Spain originally STOLE that treasure from the Native Americans. The rightful owners, the descendants of the Western Hemisphere Natives, should be counter suing the descendants of the thieves from Spain.
Spain abandoned that ship many years ago. They gave up any claim they had since they never tried to recover the treasure themselves. Don't tell me the maritime law crap justifies this thievery, because it doesn't, what it does do is allow it to happen. That treasure was doing no one any good where it was and if Spain wanted it, Spain should have recovered it themselves, not wait like lazy socialists and steal it from the people that recovered it honestly by the fruits of their own labor.