Body colour ranges from dark grey to almost entirely white. Typically grey covered with white scratches and markings. White underside and very short snout. Up to 4.3 m long.
Risso's Dolphins live in small to medium groups. They are often seen mixing with other dolphin species and interbreeding (hybridisation) with the Bottlenose Dolphin has been frequently observed. Births typically occur during the warmer months.
Humans interactions include:
Long-line fishing, direct hunting for human consumption and sometimes used for fertilizer.
Deep oceanic and continental slope waters of tropical and temperate regions.
Worldwide. Southern Australia. Potentially near Port Phillip, recorded from Victoria.
Shore (0-1 m)
Shallow (1-30 m)
Deep ( > 30 m)
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Least Concern
- CITES : Trade restrictions (Appendix II)