The issue is very controversial. Many of the shipwrecks that today, Spain wants to be his property, were seized from their rightful owners. Until the arrival of Bourbons in Spain (1700), this country did not have a proper navy. They embargoed the best ships. The problem is that, in many cases, the crown (the state) did not meet the embargo conditions (pay the owners). So, now, should be examined case by case, what are truly the ships that Spain can claim sovereign immunity, as was the case of the Mercedes with the supposed treasure recovered by Odyssey in 2007, and I say supposed because no I am entirely convinced about its true origin.
About museums, many are full because the artifacts seized or abducted, ended in them, as in the case of the Mercedes treasure. Significantly, the Underwater Archaeology Museum of Cadiz, is called by the Cádiz people el museo de la na '' (the museum of nowhere).
Kindly offered on the ticket, I'm fine in Seville, where I returned because my ancestors founded a place called Italica, a few kilometers from this city.