2 bull sharks swam up Mississippi River to St. Louis, study finds
2 bull sharks swam up Mississippi River to St. Louis, study finds By Skyler Rivera 2 bull sharks swam up Mississippi River The researchers confirmed those two sightings but besides them, the sighting record in the United States was littered with incomplete reports. Two bull sharks, which are native to the Gulf of Mexico, made their way up to St. Louis by swimming up the Mississippi River separately in 1937 and 1995, 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 P...