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Figure 158. — In this rare photograph of a pygmy sperm whale at sea in the Pacific, the animal 

 was startled by the approaching vessel, circled quickly, and then dived out of sight. The trail 

 of material visible in the water in front of and to the right of the animal is feces, reddish brown 

 to rust in color. Startled whales and porpoises often defecate in this manner. (Photo by S. 

 Ohtumi ) 



Figure 159. — A young pygmy sperm whale swimming in a tank at the New York Aquarium. Note the shape and position of the dorsal fin and the shape of the 



head. (Photo by H. E. Winn.) 



145 



