RECOMMENDATIONS 



The values of turbidity and their related abundance 

 of organisms should be used when optical or visual opera- 

 tions or installations are required. 



The relation of phytoplankton blooms to physical 

 and chemical phenomena should be studied to produce cri- 

 teria enabling prediction of plankton bloom development 

 and abatement. 



The effect of phytoplankton blooms on sound trans- 

 mission should be investigated. 



Diver vision should be correlated with hydrophoto- 

 meter measurements and biological populations. The effects 

 of various biological populations on the operation of under- 

 water lasers should be investigated. Bioluminescence 

 should be measured and correlated with concentrations of 

 dinoflagellates and water transparency. 



Size, origin, and geographic distribution of colored 

 water masses should be observed from airplanes and 

 satellites. The relation between light transmission and 

 seasonal blooms of phytoplankton should be established. 



67 



