From Medill Reports:

Asian carp get all the headlines lately, but another invader, present in the trillions, is already devastating the ecosystem in Lake Michigan: the quagga mussel.

“Asian carp is a concern, in terms of what it’s going to do to the Great Lakes basin,” said Gary Fahnenstiel, senior ecologist with the National Oceanic and Atmospheric Administration’s Great Lakes Environmental Research Laboratory in Muskegon, Mich. “But right now, Lake Michigan is being devastated by the quagga mussel.” Read more.