Corkscrew snail. Collected from the TNC site of the Living Shorelines Project in San Rafael, CA on 9 August 2017.

Photo taken on 13 March 2018, at the Boyer Lab in the Estuary & Ocean Science Center of San Francisco State University.

Round snail. Collected from the TNC site of the Living Shorelines Project in San Rafael, CA on 9 August 2017.

Photo taken on 13 March 2018, at the Boyer Lab in the Estuary & Ocean Science Center of San Francisco State University.