Radio and Acoustic Tag in Hand (IMAGE) DOE/Pacific Northwest National Laboratory Caption An acoustic tag (left) and a radio tag (white, with wires) sit in the palm of a researcher's hand. Both acoustic and radio tags are being implanted in juvenile fall Chinook salmon to track their movement at the confluence of the Clearwater and Snake rivers near Lewiston, Idaho. Credit Pacific Northwest National Laboratory Usage Restrictions Please credit to Pacific Northwest National Laboratory 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.