Mel Fisher was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 treasure hunter

Treasure hunting

Treasure hunting is the physical search for treasure which has been a notable human activity for millennia. -In modern times:In recent times, the early stages of the development of archaeology included a significant aspect of treasure hunt; Heinrich Schliemann's excavations at Troy, and later at...

 best known for finding the 1622 wreck of the Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 galleon

Galleon

A galleon was a large, multi-decked sailing ship used primarily by European states from the 16th to 18th centuries. Whether used for war or commerce, they were generally armed with the demi-culverin type of cannon.-Etymology:...

 Nuestra Señora de Atocha

Nuestra Señora de Atocha

Nuestra Señora de Atocha was the most famous of a fleet of Spanish ships that sank in 1622 off the Florida Keys while carrying copper, silver, gold, tobacco, gems, jewels, jewelry and indigo from Spanish ports at Cartagena, Colombia, Porto Bello in New Granada and Havana bound for Spain...

named after a shrine in Madrid for protection. He discovered the wreck July 20, 1985. The estimated $450 million cache recovered, known as "The Atocha Motherlode," included 40 tons of gold and silver; there were some 114,000 of the Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 silver coins known as "pieces of eight

Spanish dollar

The Spanish dollar is a silver coin, of approximately 38 mm diameter, worth eight reales, that was minted in the Spanish Empire after a Spanish currency reform in 1497. Its purpose was to correspond to the German thaler...

", gold

Gold

Gold is a chemical element with the symbol Au and an atomic number of 79. Gold is a dense, soft, shiny, malleable and ductile metal. Pure gold has a bright yellow color and luster traditionally considered attractive, which it maintains without oxidizing in air or water. Chemically, gold is a...

 coins, Colombia

Colombia

Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...

n emerald

Emerald

Emerald is a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the 10 point Mohs scale of mineral hardness...

s, gold and silver artifacts

Artifact (archaeology)

An artifact or artefact is "something made or given shape by man, such as a tool or a work of art, esp an object of archaeological interest"...

, and 1000 silver bars.