Are you dreaming of finding treasures at the bottom of the sea? Well, you do have a good chance of doing it! According to UNESCO, there are three million undiscovered shipwrecks in Earth’s oceans, lakes, and rivers, but not all of them are treasure ships, of course. One of the oldest wrecks researchers still haven’t found is Flor de la Mar. Estimates put its booty at more than $2 billion in today’s money - sounds like something worth looking for, doesn't it?

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