10' 



28""oo' 



50' 



40 - 



30' - 



AFFECTED AREA 

 (Aerial and vessel survey) 



OCTOBER 2, 1957 



■ DISCOLORED WATER 



^ = DEAD FISH 



= AREA SURVEYED 



eS-OC 50' 40. 30' 



Figure 7. — Survey of red tide occurrence on October 2, 1957. 



47 



