 The bay is home to more than 100 plant species, 300 invertebrate species, 100 fish species, and 200 bird species.In addition, the bay and its complex system of marshes and grasses support hundreds of thousands of migrating and local shore birds.Commercially, this second-largest estuary in California is the site of the largest oyster production operations on the West Coast, producing more than half of all oysters farmed in California.