The Black River is a river in Thurston County in the U.S. state of Washington. It is approximately 25 miles (40 km) long with a drainage basin of about 144 square miles (370 km2).
Due to their incredible eyesight, dragonflies experience time differently than humans. Insects like flies and mosquitoes actually move very slowly for dragonflies. They can track a flying object and decide whether it is prey or not in less than 5 hundredths of a second.