148 



NOAA Technical Report NMFS 140 



small proportion occurred on stalks of ascidians, on 

 carapaces of decapod crustaceans, and on a variety of 

 other hard to moderately hard objects. Stalked barnacles 

 were attached to similar substrates but were relatively 

 more common on crustaceans, hydroids, and corals. 



The majority of specimens were chalky white. Rock 

 barnacles from inshore localities sometimes had a film 

 of yellowish or greenish algae covering their plates, and 

 in some ridged species a brownish layer occurred in the 

 grooves of the shell. Very large specimens were com- 

 monly light yellow and white, whereas some of the veiy 

 small ones were pale gray. Stalked barnacles generally 



had white shells on both the capitulum and peduncle, 

 but a few specimens had delicate shades of rose on the 

 larger plates. The color of the peduncle ranged from 

 yellow to grayish brown. 



Cirripedia occurred in 41 samples (4% of total). 

 Their density averaged 21.8/m . Their biomass aver- 

 aged 3.39 g/m- (Table 5). 



Geograph ic Distribution 



Barnacles were found at scattered locations along the 

 entire length of the region's continental shelf (Fig. 

 148). Coastal regions, shoals, and banks were the most 



