
Although many people are studying salt marsh harvest mice, or “salties,” as they are affectionately known, San Francisco State graduate student Anastasia Ennis is one of a few people studying harvest mouse population genetics.

Spotted and photographed on Milagra Ridge by Jennifer Schurk, April 30.

Last week a backhoe knocked a hole in the outer levee at the former Hamilton Army Airfield, letting the Bay seep back onto a landscape that had undergone 18 years of preparation for this moment.

A pod of orcas put on a show for visitors off the shore of the Point Reyes Lighthouse this weekend. Check out these photos.

Spotted and photographed near El Polin Springs in the Presidio by Elizabeth Creely, April 27.

The son of Russian immigrants living in post-war Shanghai, Igor Skaredoff moved to California with his parents at the age of six, and has been here for most of his life. After a long career as an environmental engineer for Shell Oil, Skaredoff retired from industry and dedicated himself to advocating for the creeks and…