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Quick and Easy Dolphin Identification Key

If you make a sighting we will appreciate you making a report here

Less than 4m (12 ft)
Dorsal fin shape

Beak length

”Mickey mouse”-shaped, rounded

HECTOR’S DOLPHIN
(Cephalorhynchus hectori )

Other characteristics:

  • smallest dolphin (1.2-1.6 meters)
  • Black shading around dorsal fin, pectoral fin, cheeks and eyes, and lower part of tail
  • 3-pronged or “trident” shape white patch on belly
  • No pronounced beak
  • Usually coastal in small groups (5-8)

Triangular, hooked with point
Beak length


Blunt and rounded


Long, narrow and protruding


Long, narrow and protruding

Body colors
Black, Grey, and white. Not Tan or Brown

Dusky

Body colors
Chocolate Brown, Tan stripes on sides

Common

Body colors
Grey, often with White scrape marks

Bottlenose

DUSKY DOLPHIN
(Lagenorhynchus obscurus)
COMMON DOLPHIN
(Delphinus delphis)
BOTTLENOSE DOLPHIN
(Tursiops truncatus)


Other characteristics:

  • 1.6-1.8 meters long
  • Can occur in large groups >100
  • RARELY WHISTLE
  • Acrobatic
  • Rarely seen around North Island


Other characteristics:

  • 1.6-1.8 meters long
  • Can occur in large groups >100
  • OFTEN WHISTLE
  • Commonly seen around North Island


Other characteristics:

  • large dolphin (up to 4 m)
  • Group size up to about 100
  • Dorsal fins often well-marked (many nicks, notches and scrapes)
  • OFTEN WHISTLE

If you make a sighting we will appreciate you making a report here

 

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