100 150 



Distance (feet) 



250 



25 



Marina . Beach Z/2/Ti 



Moss Landing 3/1/73 



Salinas River 3/2/73 



Manresa Beach 3/1/73 





Figure 4. 



100 150 200 



Distance (feet) 



Profiles of beaches with and without clams-continued. 



250 



23 



