documenting the Elwha dam removal

http://seattletimes.nwsource.com/html/localnews/2016083904_elwhaoverview18m.html

For at least a decade, scientists have been getting ready for this moment, documenting the baseline condition of the Elwha watershed. You name it, they've done it, in a nonstop rodeo of fin clipping, wire tagging, electroshocking, measuring, sexing, anesthetizing, tissue sampling, stomach pumping, beach seining, snorkel surveying, sonar imaging, trapping and tagging. And still more tagging. Tagging everything: elk, bear, river otters, songbirds and more fish than you can imagine. Even rocks, with little microchips plugged inside, to see how long it takes them to tumble down the riverbed or move on the beach. [emphasis mine]