For a small fish only found in the San Francisco Estuary, the delta smelt has caused a lot of controversy over the years.

San Francisco State University is preparing to close its Estuary and Ocean Science Center, citing financial challenges.

San Francisco Bay’s only marine laboratory, an important site of climate change research, will close due to lack of funding, ...

A three-inch-long fish is at the center of a political debate over wildfire management in California as deadly blazes continue in Los Angeles.

San Francisco Bay is a designated “estuary of national significance” under the federal Clean Water Act. The bay and its tributary streams, situated in an urban area with more than 7 million ...

The John Muir Land Trust has acquired Point Buckler Island for $3.8 million to restore its ecosystem after damage from ...

Longfin smelt were once one of the most abundant fishes in the San Francisco Bay estuary, but populations have declined more than 99% from 1980s levels. Annual state surveys show that longfin smelt in ...

Ferries have come a long way in the San Francisco Bay transportation system since John Reed, an Irish immigrant, established ...