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Rough-Toothed Dolphin Picture of a rough-toothed dolphin
Scientific Name: Steno bredanensis
Other Names: Slopehead dolphin
Length: 7-8.5 ft. (2.1-2.6 m.)
Weight: 220-330 lbs. (100-150 kg.)
Teeth: 76-110
 

Named for the rough surface that forms near the crowns of their teeth, these animals are further distinguished by the smooth slope of their faces from the beak to the forehead. Some rough-toothed dolphins have been kept in captivity where their behavior suggests that they possess a greater intelligence than other marine mammals.
 



  Short-Finned Pilot Whale Short finned pilot whale
Scientific Name: Globicephala macrorhynchus
Other Names: Pothead Whale, Pacific Pilot Whale
Length: 12-21.5 ft. (3.6-6.5 m.)
Weight: 1-4 tons
Teeth: 28-36
 

Pilot Whales have a white patch under the chin. This patch narrows to a slim white line along the stomach. The flippers on pilot whales are long and pointed. Short-finned pilot whales have shorter flippers, less teeth, and slightly different skulls than Long-finned pilot whales. There is only a slight overlap in the ranges of the two species.
 



  Southern Right-Whale Dolphin Southern right-whale dolphin
Scientific Name: Lissodelphis peronii
Other Names: Mealy-mouthed Dolphin
Length: 6-9.5 ft. (1.8-2.9 m.)
Weight: 130-220 lbs. (60-100 kg.)
Teeth: 174-200
 

Right-whale dolphins have slender beaks and no dorsal fins. The upper surface of their bodies are black, but there is a large white patch on the belly between the flippers and a long narrow streak of white extending from this to the flukes. The white in the southern form is much more extensive than the northern form.
 



  Striped Dolphin Picture of a striped dolphin
Scientific Name: Stenella coeruleoalba
Other Names: Whitebelly dolphin, Blue-white dolphin, Gray's dolphin
Length: 6-8.3 ft. (1.8-2.5 m.)
Weight: 200-330 lbs. (90-150 kg.)
Teeth: 156-216
 

Striped dolphins are the most robust of the species Stenella. The colors of this species are variable, but there is always a dark stripe running along the side and usually a dark band curving from the dorsal fin to the eye. These dolphins frequently breach, sometimes as high as 23 feet. A Map of where they live
 



  Tucuzi Picture of a tucuzi
Scientific Name: Sotalia fluviatilis
Other Names: Estuarine dolphin
Length: 4.3-6 ft. (1.3-1.8 m.)
Weight: 75-100 lbs. (35-45 kg.)
Teeth: 104-140
 

The tucuxi is the smallest of cetaceans. This dolphin is fluvial and inhabits coastal regions near mouths of rivers and advances into rivers such as the Amazon river and the Orinoco river. Tucuxi's are similar to the larger bottlenose dolphin except for a pointed, triangular dorsal fin and other small differences.
 



  White-Beaked Dolphin White-beaked dolphin
Scientific Name: Lagenorhynchus albirostris
Length: 8.3-9.3 ft. (2.5-2.8 m.)
Weight: 395-605 lbs. (180-275 kg.)
Teeth: 88-112
 

White beaked dolphins tend to have large, stocky, robust bodies. Their common name is misleading. In some geographic areas this animal has a gray or darker beak. White beaked dolphins are such fast swimmers that they create rooster tail wakes.
 


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