Top 14 Incredible (& Valuable) Undersea Treasures Ever Found

9. The S-5 Sunken Submarine

Value Estimate Present: Unknown The Year Was Lost: 1920 Years Found: 2001 On September 1, 1920, the USS S-5, a US Navy submarine, unintentionally sank while undergoing trial runs. Several people worked together to save lives, and eventually the submarine was refloated, even though it eventually sank while being towed again.

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PJF Military Collection/Alamy: Sunken Submarine S-5 Before being found by a U.S. National Oceanic and Atmospheric Administration survey ship in July 2001, the precise location of the wreckage was unknown. Following its hunt for the submarine, the survey ship donated its SONAR data to be displayed at the Submarine Force Library and Museum in Connecticut.

10. The Mayan Ruins and Pyramids

Value as of right now: unknown The year it vanished was between 800 and 1000 C.E. Discovered Year: 2018. For archaeologists, the discovery of a single underwater ancient artifact can be quite exciting, but finding a whole underground cave system full of various artifacts can be even more so. Divers in Mexico were pleasantly delighted to find the largest underwater tunnel system in the world—it belonged to the Mayans.

The Travel/MMayan Pyramids and Ruins After over 10 months of investigation, the Gran Acuifero Maya group discovered a network of over 200 underwater caverns that were fully connected to form this complex chain. These caves offer archaeologists a great opportunity to learn about ancient artifacts that date back roughly two millennia, including human bones and pottery.