The 1997 El Niño/Southern Oscillation (ENSO 97-98):
Biological observations possibly related to El Niño

 

Brazil 
 
Fish / marine mammals
Birds
Disease
Other
August       28
September   10   Early 
09
October   10   02 
09 
31
November 10      
December       05
January        
February     14 
17
10 
19 
20
March 06 
12 
21 
31
April 02 17
May 05 
31
June     23
24
 
 
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