Attack of the Zebra Mussels

Boaters on the Great Lakes often see clusters of small mussels stuck to docks, rocks, and even boats! Called zebra mussels, these organisms can cause people to cut their feet, filter out food for larval fish, and more. Through reading about how zebra mussels came to these freshwater lakes, readers learn what invasive species are and how they can cause great harm to native ecosystems. Facts about t...