Threats to dusky dolphin
Predators
Killer whales and some shark species are the only confirmed predators of dusky dolphins. In order to avoid killer whales, dusky dolphins will move into shallower water and swim closer together.
Human impact
Unknown numbers of dusky dolphins are caught in set nets in New Zealand waters each year. Current catches appear to have decreased from those of the 1970s and 1980s however. Possible future expansion of aquaculture at Admiralty Bay is likely to have an impact on dusky dolphin populations (Markowitz, 2004) through habitat fragmentation and competition for food resources.
Contacts
To report whale or dolphin sightings or strandings phone the DOC HOTline 24 hour emergency number:
0800 DOC HOTline (0800 362 468)