ABSTRACT 



This report describes the results of zooplankton sampling on 10 cruises in Hawaiian waters 

 during the years 1953-54. The collections were obtained with 1-nneter nets employed in 30-minute 

 oblique hauls to about 200 meters. A short series of - 100 m. hauls was made for purposes of 

 comparison. 



The abundance of zooplankton was remarkably uniform throughout island waters. Although 

 the eastward or upstream portion of the survey area produced consistently low catches, there were 

 no statistically significant differences between cruises, between windward and leeward areas or 

 among six subareas. The large eddies characteristic of the surface currents, particularly to the 

 leeward of the islands, apparently had no influence on variations in the volume of zooplankton. Also, 

 evidence of enrichment from upwelling, land drainage, or other littoral influence was obscure or 

 lacking. 



Zooplankton volumes were not significantly correlated with water temperature, salinity, 

 inorganic phosphate, thermocline depth, or skipjack catch. There was a trend, however, of increas- 

 ing temperature, zooplankton abundance, and skipjack catch from March to July, but we doubt that 

 there were direct or causal relationships among these variables. 



