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Table 1.

Body characteristics*of a spinner dolphin

Body  
Total length 1.82 m 
Mass 65 kg 
Girth at axilla 0.82 m 
Corresponding radius 0.13 m 
Average radius 0.10 m 
Maximum radius (at dorsal fin) 0.15 m 
Conformation of pectoral flipper - parallelogram, 45° rake 
Length 0.28 m 
Width 0.08 m 
Model area 0.022 m2 
Model area (Ψ=30°) 0.019 m2 
Conformation of dorsal fin - isosceles triangular  
Height 0.16 m 
Width at base 0.42 m 
Model area 0.34 m2 
Conformation of fluke - right triangular  
Width 0.32 m 
Depth 0.11 m 
Model area 0.25 m2 
Body  
Total length 1.82 m 
Mass 65 kg 
Girth at axilla 0.82 m 
Corresponding radius 0.13 m 
Average radius 0.10 m 
Maximum radius (at dorsal fin) 0.15 m 
Conformation of pectoral flipper - parallelogram, 45° rake 
Length 0.28 m 
Width 0.08 m 
Model area 0.022 m2 
Model area (Ψ=30°) 0.019 m2 
Conformation of dorsal fin - isosceles triangular  
Height 0.16 m 
Width at base 0.42 m 
Model area 0.34 m2 
Conformation of fluke - right triangular  
Width 0.32 m 
Depth 0.11 m 
Model area 0.25 m2 

Masses and dimensions are used to model the aerial spinning dynamics of spinner dolphins (Stenella longirostris).

Ψ is the angle that the pectoral flippers are canted to the water flow.

*

Dimensions are based on data from average values(Perrin and Gilpatrick, 1994)and scaled photographs of appendages for a related species (Stenella clymene; NMNH504408).

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