2Discover Chesapeake Bay takes readers to the water's edge, where they will learn about the bay's atmosphere, geosphere, hydrosphere, and biosphere. These four very different systems create a unique environment in and around Chesapeake Bay, the largest estuary in the United States. Readers will experience 200 miles of shoreline teeming with more than 3,600 species of animals and plants. Colorful maps, diagrams, and photos provide a close-up view of Chesapeake Bay. Book is aligned to curriculum standards and includes sidebar, activity, glossary, index, and additional resources.