Body to 16 feet (4.9 m) long. Narwhal 



Body of adult brownish with grayish spots; body of young dark Monodon monoceros 



bluish gray fading to white belly. ^^2 



Head small; adults may have tusks up to 9 feet long (2.7 m). P' 



Small row of bumps along back ridge. 

 Distribution usually in coastal waters from Arctic waters south to 



Labrador coast. 



SMALL WHALES, DOLPHINS, AND PORPOISES 



(less than 13 feet [4 mj maximum overall length) 



With a Dorsal Fin 



The species in this group are not discussed in order near proximity to those animals with which they are likely to 

 of length; instead the species of the genus Stenella are treat- be confused in the field, 



ed together and then they and other species are placed in 



Body to 7.5-8 feet (2.3-2.4 m) long. Atlantic spotted dolphin 



Body dark purplish gray on back, lighter gray on sides and belly; Stenella plagiodon 



becomes increasingly spotted with increase in size. ^q4 



Body has spinal blaze and light line from flipper to eye. 

 Beak white on tip. 

 Rides bow waves. 

 Distribution usually in tropical and warm temperate waters; most 



common inside 100-fathom curve of continents. 



Body to at least 7 feet (2.1 m) long. Bridled dolphin 



Body dark gray on back; lighter gray on sides and belly. Stenella frontalis 



Body has no spinal blaze. p ^Qg 



Cape on top of head distinct. 

 Bridle: dark lines from eye to rostrum and from flippers to corner 



of mouth. 

 Rides bow waves. 

 Distribution in tropical waters, primarily in West Indies. 



Body to at least 7 feet (2. 1 m) long. Spinner dolphin 



Body dark gray on back; tan on sides; white on belly. SteneUa longirostris 



Beak often long and slender, usually black above, white below. p hq 



Tip of snout and lips distinctly black. 



Dorsal fin moderately falcate to triangular and very erect. 



Rides bow waves. 



Often jumps and spins on longitudinal axis. 



Distribution in oceanic and coastal tropical waters. 



Body to about 9 feet (2.7 m) long. ^'"^"^ '*°'P'7^ _ 



Body dark gray or bluish gray on back; gray on sides; gray or white SteneUa coeruleoalba - 



on belly. Stenella Styx 



Distinctive black stripes from: 1) eye to anus. 2) eye to flipper. p ^^^3 



Distinctive black blaze from behind dorsal fin to side above flipper. 

 Rides bow waves. 

 Distribution temperate, subtropical, and tropical; seldom close to 



shore. 



Body to 8.5 feet (2.6 m); usually less than 7.5 feet (2.3 m) long. Saddleback dolphin 



Body brownish gray to black; belly and chest white; crisscross Delphinus delphis 



(hourglass) pattern of yellow tan on sides. j^g 



Distinct black stripe from center of lower jaw to flipper. 

 Rides bow waves. 

 Distribution temperate and tropical; seldom close to shore. 



16 



