HOLT; DENSITY OF DOLPHIN SCHOOLS 



A. GOOD SUN 



30°N 



20° 



20°S 



100° 90° 80° 70° W 



B. POOR SUN 



30°N 



20' 



10° 



0° 



10° 



20°S 



Southern Offshore 

 Area 



I 1 1 1 1 1 1 1 



160° 150° 140° 130° 120° 110° 100° 90° 80° 70°W 



Figure 4.— Tracklines surveyed by airplanes during 1977 and 1979 during (A) good and (B) poor sun glare conditions in the coastal 



and offshore density bands. 



427 



