Drakes Estero cleanup

Workers bring to shore what they retrieved in the cleanup.  (Genaro Molina / Los Angeles Times)

Brigid Mata, right, daughter of Kevin Lunny, who operated Drakes Bay Oyster Co., and her sister-in-law Alexandra Mata.  (Genaro Molina / Los Angeles Times)

National Park Service outreach coordinator Melanie Gunn, wildlife ecologist David Press, center, and chief scientist Ben Becker look over retrieved bags of oysters.  (Genaro Molina / Los Angeles Times)

Steven Jiannalone, center, and Chris Holden, right, of Sean Alexander Marine Services pull up a bag of oysters.  (Genaro Molina / Los Angeles Times)

Sean Alexander Marine Services employees guide a barge covered with bags of oysters retrieved from Drakes Estero.  (Genaro Molina / Los Angeles Times)

Employees of Sean Alexander Marine Services pull away from a row of oyster racks.  (Genaro Molina / Los Angeles Times)

A snowy egret in Drakes Estero.  (Genaro Molina / Los Angeles Times)

Debris on the shore of Drakes Estero includes oysters and oyster sticks.  (Genaro Molina / Los Angeles Times)

Drakes Estero at Point Reyes National Seashore.   (Genaro Molina / Los Angeles Times)