Chesapeake Bay, an arm of the Atlantic Ocean extending into Maryland and Virginia. It is about 200 miles (320 km) long and up to 40 miles (60 km) wide. Cape Charles and Cape Henry flank the entrance. A number of rivers enter the bay, including the James, York, Rappahannock, Potomac, and Susquehanna.
For centuries the bay produced large quantities of blue crabs, oysters, and commercial fish. During the early 1990's, however, pollution adversely affected much of the marine life in the bay and production of commercial fish, blue crabs, and oysters declined. Chesapeake Bay is part of the Intracoastal Waterway, much used by pleasure boats.
The Lane Memorial Bridge links Maryland's eastern and western shores. The Chesapeake Bay Bridge-Tunnel (officially, the Lucius J. Kellan, Jr. Bridge-Tunnel) links the mainland and eastern parts of Virginia.