Composition and Distribution of Macrobenthic Invertebrate Fauna 



21 



sey. Densities throughout most of their range averaged 

 less than 50 individuals/m 2 . In a few localities, however, 

 their density averaged between 100 and 900/m 2 . Their 

 biomass was moderate (less than 10 g/m 2 ) over most of 



their range and large quantities (50 to 288/m 2 ) were 

 encountered in several different areas. 



The average density of ascidians was moderately high 

 (34 and 27 individuals/m 2 ) in onlv two of the six start- 



