Ethan Livingston, of Dixon Marine Services, lowers an oyster reef ball into San Pablo Bay off Point Pinole Regional Shoreline in Richmond on Nov. 15, 2013.
Ethan Livingston, of Dixon Marine Services, lowers an oyster reef ball into San Pablo Bay off Point Pinole Regional Shoreline in Richmond on Nov. 15, 2013. The Watershed Project is installing 100 of the man-made "balls" to promote the establishment of plant and animal life in the area. Dixon Marine donated their services. (Dan Honda/Staff)