The ocean floor is littered with millions of shipwrecks, but we only know the locations of a small fraction, and we've explored only a small fraction of those. Will the treasures of these sunken ships ever be hauled up from the deep?
There is an estimated $60 billion in sunken treasure around the world, just waiting at the bottom of the ocean. And that doesn't include the historical and cultural value of excavating shipwreck sites. So why don't we explore more of them?
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