16,550,000 



10,000,000 r 



1,000,000 



100,000 



BLIND PASS 



G BREVE COUNTS 

 • -PLANE SAMPLES 

 -LETHAL CONC 



10,000 



Figure 14. — Numbers of red tide organisms per liter off Blind Pass. 



10,000,000 (- I I 1 



■^ ' ' JOHNS PASS 



1,000,000 



100,000 - 



G. BREVE COUNTS 

 •-PLANE SAMPLES 

 ^-LETHAL CONC. 



•^ 



/ 



/ 



/ 



/ 



10,000 o I 1 L 



J — o — o o' 



J I I I I I I 



24 26 28 30 2 4 6 8 10 12 14 16 18 20 22 



SEPT. OCTOBER 



Figure 15. — Numbers of red tide organisms per liter off John's Pass. 



54 



