Exploring Nature in the San Francisco Bay Area

Liberty Island

This flooded island has become a surprising refuge for endangered Delta smelt, which have ended up living here full time, much to the surprise of biologists. But an invading exotic...

Paradise Cut

Superhighways stay out of the Delta, mostly. But if you have ever driven on Interstate 5 south of Stockton, you have just grazed one of the southernmost Delta islands, Stewart...

Sherman Island

The Delta’s westernmost island, which shields major water-export pumps from incoming saltwater, is a testing ground for several efforts to prepare this fragile region for the threats of sea level...