8,000] 



UPPER NET 



MIDDLE NET 



LOWER NET 



5,000 



4,000 



3,000 



2,000 



1,000 







00000000 00000 .00-000 



0600 1200 1800 0600 1200 1800 0600 1200 1800 



HOUR OF DAY HOUR OF DAY HOUR OF DAY 



Figure 12. --Average number of Und inula , Euchaeta , and Halopt ilus per 1,000 m.-' of water 



strained by the three nets on HMS-34. 



% OF SAMPLE DUE TO 

 RHI20SOLENIA 



W^ 0-20 

 n 20-40 

 M 40-60 

 ^1 60-80 

 ■i 80-100 



_L 



Figure 13 . --Distribution and abundance of the 

 diatom Rhizosolenia sp. around Oahu, August 

 1-6, 1956 (HMS-35). 



Figure 14. --Stations for collecting zooplank- 

 ton for monitor series. Semimonthly collec- 

 tions were made at stations 1 and 3 for the 

 inshore-offshore series. 



17 



