Body to at least 8 feet (2.4 m) long. 



Body very robust in front of dorsal fin, resembling cross between 



saddleback dolphin and Atlantic white-sided dolphin. 

 Beak very short and indistinct. 

 Distinct black stripe from beak to area of anus. 

 Dorsal fin and flippers small. 

 Distribution tropical (not yet recorded in western North Atlantic). 



Fraser's dolphin 



Lagenoldelphis hosei 

 p. 120 



Body to about 9 feet (2.7 m) long. 



Dorsal fin part gray, part black; tall and distinctly falcate. 



Distinctive patch of white on side; tan or yellow coloration below 



and behind dorsal fin, often visible on swimming animal. 

 Beak short; all dark. 

 Does not usually ride bow waves. 

 Distribution Cape Cod to southern Greenland. 



Atlantic white-sided dolphin 



Lagenorhynchus acutus 

 p. 123 



Body to about 10 feet (3.1 m) long. 



Dorsal fin all black, tall, and distinctly falcate. 



Two pale areas: one in front, another behind and below dorsal fin; 



visible on swimming animal. 

 Beak short, sometimes brushed with white blaze. 

 May ride bow waves. 

 Distribution Newfoundland north in summer, Cape Cod north in 



winter; common close to shore at Cape Cod in spring. 



White-beaked dolphin 



Lagenorhynchus albirostris 

 p. 126 



Body to 12 feet (3.7 m) long. 



Body dark gray on back; lighter gray on sides; belly white to pink. 



Snout robust and short. 



Dorsal fin tall; back curved. 



Ride bow waves; often turn head downwards or to the sides as 



they do so. 

 Distribution temperate and tropical, usually within 20 miles of 



shore (often in bays, lagoons, and larger rivers) but extending off 



the continental shelves. 



Atlantic bottlenosed dolphin 



Tursiops truncatus 

 p. 128 



Body to approximately 5.6 feet (1.7 m) long. 

 Body steel blue to dark brown on back; white on belly. 

 Dorsal fin nearly triangular; curves only slightly backward. 

 Distribution in Lake Maracaibo and the rivers of Guiana and in the 



near shore coastal waters of northeastern portion of South 



America. 



Guiana dolphin 



SotaMa guianensis 

 p. 132 



Body to about 8 feet (2.4 m) long. 



Body dark gray to purplish gray on back with white or pink blotches 



on sides; belly white. 

 Body frequently shows numerous white scars. 

 Head tapers gradually; beak long and slender; no clear separation of 



beak from forehead. 

 May ride bow waves. 

 Distribution in deep tropical waters. 



Rough-toothed dolphin 



Steno bredanensis 

 p. 135 



Body to 8-9 feet (2.4-2.7 m) long. 



Body black with white belly patch which may extend up sides in 



area of anus. 

 Head rounded; no beak; lips white; lower jaw and chin may be 



white. 

 Dorsal fin to 15 inches (38 cm) tall, falcate; located near midpoint 



of back. 

 Distribution tropical and subtropical. 



Pygmy killer whale 



Feresa attenuata 

 p. 138 



17 



