Great Lakes face new threat from invasive quagga mussels

Carol Thompson
The Detroit News

The quagga mussel Kishore Gopalakrishnan held up to the springtime sun was about as big as his thumbnail, but the Wayne State University researcher cautioned against discounting the devastation such a diminutive creature can cause.

"This can filter one liter of water per day," he said, its shell between his fingers. "Can you believe that?"