3. Investigate the effect of phytoplankton blooms on 

 sound transmission. 



4. Correlate diver vision with hydrophotometer measure- 

 ments and biological populations; investigate the effects of 

 various biological populations on the operation of underwater 

 lasers; measure and correlate bioluminescence with concen- 

 trations of dinoflagellates and water transparency. 



5. Observe the size, origin, and geographic distribution 

 of colored water masses from airplanes and satellites; 

 establish the relation between light transmission and seasonal 

 blooms of phytoplankton. 



ADMINISTRATIVE 

 INFORMATION 



Work was performed under SR 104 03 01, Task 0588 

 (NEL L40961) by members of the Marine Environment 

 Division. The report was approved for publication 1 July 

 1966. 



The authors wish to extend acknowledgments to 

 M. A. Taylor, for aid in data collection and counts of orga- 

 nisms; to H. G. Kiner, for valuable support from the NEL 

 oceanographic research tower; to M. E. Hirst, G. L. Prible, 

 and P. A. Hansen, for assistance in preparation of the graphs; 

 to A. T. Moore, I, E. Davies, and J. L. Cairns, for help 

 with the mathematical analysis; to R. Holmes and 

 Dr. W. Belser, for advice; and to Drs. G. H. Curl and 

 E. C. LaFond, for critically reviewing the manuscript. 

 J. W. Wilton and M. P. Sullivan are summer employees 

 of NEL. 



REVERSE SIDE BLANK 



