Scott Zahl, owner of Cove Mussel Co., walks along the shoreline of Tomales Bay five years ago in Marshall.
Scott Zahl, owner of Cove Mussel Co., walks along the shoreline of Tomales Bay five years ago in Marshall. Aric Crabb Contra Costa Times file
Scott Zahl, owner of Cove Mussel Co., walks along the shoreline of Tomales Bay five years ago in Marshall. Aric Crabb Contra Costa Times file