15 mm 



Figure 39. Creekbank habitat and three southern California crabs: the 

 fiddler crab ( Uca crenulata ) , the lined shore crab ( Pachygrapsus crassipes ) , 

 and the yellow shore crab ( Hemigrapsus oregonensis ) . Photo by C. Nordby; 

 illustrations by J. DeWald. 



62 



