Compiler and date details
December 2010 - Updated by Stephen M. Jackson, c/- Queensland Museum, Brisbane, following Van Dyck & Strahan (2008)
31 December 1998 - J.L. Bannister (1988); updated by Barry J. Richardson (1999), Centre for Biostructural and Biomolecular Research, University of Western Sydney, Hawkesbury
Nineteen delphinid species have been recorded from Australian waters. Dolphins tend to be gregarious, are most common in warmer waters and may be oceanic, lentic, estuarine or enter freshwater.
Externally, there is usually a prominent dorsal fin and a well-defined median notch in the hind border of the tailflukes. Where sexual dimorphism occurs, the male is larger. The rostrum of the skull is as long or longer than the cranium, the number of teeth varies widely, but teeth are always present in both upper and lower jaws and from two to seven cervical vertebrae may be fused.
The diet is mainly fish or cephalopods.
History of changes
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