YES, there have been cases of bull shark sightings in the James River. They are common in the Chesapeake Bay and other large tributaries. One type of shark renowned for thriving in both saltwater and freshwater habitats is the bull shark. They are known to be able to tolerate a wide range of temperatures and salinity conditions and can be found in a number of habitats. These habitats include estuaries, lagoons, and rivers. It is worth noting that the chances of encountering a bull shark in the James River are likely to be very low, even if they are present in the river. Bull sharks are not known to be aggressive towards humans, and there have been no documented incidents of bull shark attacks on humans in the river.