Threats to Hector's dolphin
A Hector's calf killed by a boat propeller
Dolphins and people have shared our shores and bays for centuries. In recent years, there has been a worldwide increase in awareness of marine mammals and a greater desire to protect them.
Set net fishing poses a major threat to Hector's and Maui's dolphins. Like all marine mammals they need to come to the surface regularly to breathe. If they become tangled in set nets, they will hold their breath until they suffocate.
Because these dolphins occur close inshore, often in bays and harbours, they are at risk of being injured by boats. Newborn dolphins are particularly vulnerable as they swim relatively slowly, close to the surface. Some have been killed by boat propellers, when unwary boaties have run them over.
Other potential threats to their survival include trawling, marine pollution, disease and impacts of tourism and aquaculture.
Contacts
To report whale or dolphin sightings or strandings phone the DOC HOTline 24 hour emergency number:
0800 DOC HOTline (0800 362 468)