Interesting fact #34: How many shipwrecks are on the ocean floor?
The United Nations estimates that there are over three million shipwrecks on the ocean floors. Lost, destroyed, or deliberately sunk, these wrecks are of interest to divers, underwater archaeologists, and treasure hunters alike.
Source: http://listverse.com/2013/04/23/10-shipwrecks-frozen-in-time/
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