Quagga Mussels (IMAGE) Cary Institute of Ecosystem Studies Caption The quagga mussel is an invasive biofouler that attaches to hard surfaces, such as pipes, screens, boats, and ropes. Credit USDA photo by Bob Nichols Usage Restrictions None 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.