Can a bull shark survive in the Rock river illionis?

No. Bull sharks are found in warm waters such as the Atlantic, Pacific, and Indian oceans. The Rock River in Illinois has a continental climate with cold winters and hot summers. The average temperature in January is 23°F (-5°C), and the average temperature in July is 75°F (24°C). Bull sharks cannot survive in water that is below 68°F (20°C).