Magnetic Orientation (IMAGE) Oregon State University Caption A new study using small Chinook salmon "parr" found the fish use the Earth's magnetic field to orient themselves. Credit (Graphic courtesy of Oregon State University) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.