October 24, 2017
Mark Anderson pulls a quagga mussel monitoring device from dozens of feet below the surface of Lake Powell.
Stories this photo appears in:
Losing Lake Powell’s invasion battle, but trying to win the war
Quagga mussels can disrupt dam flow, remove nutrients and oxygen
Ecologist Mark Anderson still sometimes tears up thinking about March 3, 2013, when an adult quagga mussel was discovered — the definitive sign of a possible aquatic apocalypse — clinging to a boat hauled from the waters of Lake Powell.
By Kianna Gardner/Cronkite News
October 24, 2017