Lake Superior's shipwrecks aren't immune to invasive species in the Great Lakes
Beneath the cold blue waters of Lake Superior lie hundreds of shipwrecks, which serve as underwater time capsules of travel, trade and turbulence dating back more than a century. While the fate of these structures is largely subject to the hands of time, new foes have crept on board: zebra and quagga mussels. These invasive species have stirred up concern among archaeologists, historians and divers, who are reporting increased cases of the mussels coating wrecks across the Great Lakes, causing accelerated deterioration.
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