Students work together to identify and describe the various types of mussels. Using a color-coded system, they plot the arrival date of zebra mussels in North American waters. They discuss the increase in their population with the class.

You can help! Species of mollusks are disappearing from our marine sources. While it might not be obvious to the casual beach-goer, these shelled creatures provide food and shelter, medical research, and help keep our waters clean.