Tomales Bay is a long, narrow inlet of the Pacific Ocean in Marin County in northern California in the United States.
Tomales Bay is approximately 15 mi (24 km) long and averages nearly 1.0 mi (1.6 km) wide, with relatively shallow depths averaging 18 ft, effectively separating the Point Reyes Peninsula from the mainland of Marin County. It is located approximately 30 mi (48...