Deep below the Caribbean Sea, a ship lay hidden in the darkness for more than three centuries. Its wooden body slowly fell apart, but cannons, coins, cups and bottles stayed on the seabed. For generations, explorers searched for it, because the stories spoke of an enormous treasure. Then, in 2015, modern technology finally found the lost Spanish galleon San José. The San José was built for the Spanish Navy at the end of the 17th century. A galleon was a big sailing ship that could carry goods and also fight in battles. At that time, Spain controlled large parts of Central and South America, and ships carried silver, gold and emeralds from the colonies to Europe. The San José was part of this system. On its last journey, it was sailing towards Cartagena, in today's Colombia, together with a fleet…