Golden coins in a sunken ship worth up to £90 million could be one of the biggest finds of treasure ever.
Like something out of Pirates of the Caribbean, it's thought the ship, called the SS Republic, was carrying about 30,000 gold pieces.
The Republic sank in 1865 in the Atlantic, and the treasure's been at the bottom of the sea ever since.
But now salvage experts are planning to bring up the treasure. "This is what we all dream about," one of them said.