Researchers are investigating what caused a frozen shark to wash ashore on Cape Cod. Â
The Thresher Shark was found on Eastham’s First Encounter Beach. Â
Biologist Michelle Passerotti told the Boston Herald that sharks washing ashore aren't uncommon during the winter. Â
Scientists collected samples to better understand the creature's age and cause of death. Â
Passerotti said the shark could have gotten trapped in the cold shallows when the tide went out.Â
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