CHAPTER 1 Covered by Shells Monroe Michigan had a problem There was no running water Without water the power plant had to shut down The people looked for answers Soon they found the main water pipe was clogged It was full of
Sticking to Everything The shells belonged to zebra mussels Zebra mussels are animals that live underwater And they stick to anything They make their homes on rocks or in pipes Zebra mussels also stick together Thousands of mussels clump together in an area These large groups easily clog pipes Some mussels even live on other animals OOOOOOOOOOOOOOOOOOOO 0 0 0 0 0 0 0