* Durable, inexpensive, fun to use nature identification guide * Great for families, hikers, and park paddlers * Created by a high-school science teacher This field guide for marine mammals can be taped onto the deck of your kayak, slipped into your pack, or stashed in the car. Tough and waterproof, 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 have been sold!