The Prestige oil spill off the coast of Galicia was caused by the sinking of an oil tanker in 2002. The spill polluted thousands of kilometers of coastline and more than one thousand beaches on the Spanish, French and Portuguese coast, as well as causing great harm to the local fishing industry. The spill is the largest environmental disaster of both Spain's history and Portugal's history. The Prestige was a Greek-operated, single-hulled oil tanker, officially registered in the Bahamas, but with a Liberian-registered single-purpose corporation as the owner.