* Durable, inexpensive, fun to use nature identification guide * Great for taking on fishing outings * Created by a high-school science teacher This field guide for North American salmon and trout is a fun, easy way to identify your catch. Bring it along in the boat or to the beach. The tough, lightweight laminated card can take abuse and is waterproof. Mac's Field Guides are the perfect wildlife identification tool for the amateur naturalist, covering a wide variety of subjects and regions in North America. More than 1 million Mac's Guides have been sold!