The three largest maritime treasures in history are named

"The San Jose and $22 billion.
In the Caribbean Sea, 40 km from Cartagena, on the seabed rests the Spanish galleon San Jose. Gold, silver and precious stones worth up to $22 billion may be on board.
These treasures were mined in Peru and were intended for King Philip V of Spain, who was depleting the resources of his colonies to finance the War of Spanish Succession.
In 1708, the San Jose, with its priceless cargo on board, left Panama for Cuba before sailing for Spain. Off the coast of Cartagena the galleon was attacked by British ships. "The San Jose was winning the battle, but was not in the best condition. Due to severe damage, the ship went down with the sailors and cargo.
Only in 2015, with the help of an underwater robot, it was possible to find the underwater ship. Neither it nor the treasure has yet been raised to the surface - several countries are suing for this opportunity.
The Black Swan project and $500 million.
In 2007, Odyssey Marine Exploration, an American underwater exploration company, transported a giant treasure trove - 17 tons of silver and gold coins - from Gibraltar to Florida. Where the explorers discovered such a fortune was kept a closely guarded secret.
Only later in the trial was it proven that the discovered cargo was carried by the Spanish frigate Nuestra Señora de las Mercedes, which sank off the coast of Portugal in 1804. It was sunk by the ships of the British navy.
In 2012, the Supreme Court of the United States decided that the found treasures, whose value is estimated at 500 million dollars, should be returned to Spain. They are now housed in the National Museum of Underwater Archaeology in Cartagena.
"Nuestra Señora de Atocha" and $450 million.
The Spanish galleon Nuestra Señora de Atocha sank in 1622 off the Florida coast in a storm. All but three sailors and two slaves perished on board.
The cargo of gold and silver bullion and silver coins, totaling more than 40 tons, as well as tobacco, copper, firearms, and jewelry, was also lost.
The wreck of the galleon was discovered after years of searching by treasure hunter Mel Fisher on July 20, 1985. Valuables totaling $450 million were recovered from the bottom.