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2 bull sharks swam up Mississippi River to St. Louis, study finds
a recent study confirmed.In the study, published in the Marine and Fishery Sciences, Cincinnati Museum Center paleontologist Ryan Shell and Nicholas Gardner, a librarian at WVU Potomac State College, reviewed hundreds of reports of bull shark sightings on the Mississippi River and compared them to archaeological and paleontological evidence of sharks moving through the river.A fisherman's tale from 1937 sparked the researchers' interest in bull sharks upstream after two fishermen caught a 5-foot, 84-pound bull shark in Alton, Illinois, just 24 miles outside of St. Louis.