San Francisco Bay is the largest estuary on the west coast of North America. An estuary is a body of water where the river meets the sea and estuaries are very biologically productive areas. Biodiversity, the number of different types of species in an area, is an important factor in determining the health of an ecosystem. In this video, we will explore plants of the marsh and bird biodiversity in San Francisco Bay.

To explore the biodiversity of bird species in the Bay you’ll need this worksheet. Use it on any of the birds in this video, or look for a bird at home or at school.