After Mel Fisher's team recovered the Nuestra Señora de Atocha treasure (1985) in international waters, Spain claimed ownership under res nullius (property of no one → state claim) and cultural heritage laws.
A federal court awarded title to Fisher, recognizing his salvage rights. Spain did not appeal.
Fisher's recovery met the exception criteria. The courts upheld his ownership.
Legally, the treasure belongs to Mel Fisher's estate. The case remains a landmark in admiralty and cultural property law.