The bay covers somewhere between 400 and 1,600 square miles (1,000–4,000 km ), depending on which sub-bays (such as San Pablo Bay), … See more

The indigenous inhabitants of the San Francisco Bay are Ohlone. The first European to see San Francisco Bay is likely See more

Industrial, mining, and other uses of mercury have resulted in a widespread distribution in the bay, with uptake in the bay's See more

San Francisco Bay was traversed by watercraft before the arrival of Europeans. Indigenous peoples used canoes to fish and clam along the … See more

San Francisco Bay is thought to represent a down-warping of the Earth's crust between the San Andreas Fault to the west and the Hayward Fault to the east, though the precise … See more

Despite its urban and industrial character, San Francisco Bay and the Sacramento–San Joaquin River Delta remain perhaps California's most important ecological habitats. California's Dungeness crab, California halibut, and Pacific salmon See more

San Francisco Bay's profile changed dramatically in the late 19th century and again with the initiation of dredging by the US Army Corps of … See more