Ceratium fusus: Cell counts of C fusus (fig, 13) are 

 highest at 28 feet 2100 6 July and 8 feet 0900 7 July. These 

 zones of highest concentration fell within the 6 0-percent 

 transmission contours. Virtually the entire distribution of 

 C. fusus was concentrated between the 40-percent transmission 

 contours. While cell counts are considerably below those 

 of G. flavum, this organism probably contributed to light atten- 

 uation in an additive fashion. 



1800 



2200 



0200 0600 



TIME (HOURS) 



1000 



1400 



Figure 13. Distribution of Ceratium fusus (organisms per ml), with trans- 

 parency data (percent transmission) in red, Operation I. 



30 



