the rare South American porpoise occasionally near NZ
- Size
- Length: 150–180 cm, Weight: 50–70 kg
- Lifespan
- 15–20 years
- Diet
- Carnivorous. Feeds on fish and squid. A deep-diving predator that hunts near the seafloor. Shy and rarely seen, even in its native range.
- Habitat
- Coastal waters. Prefers shallow, near-shore areas in its native range. In New Zealand, recorded only as a vagrant. Does not breed anywhere near New Zealand.
- Range
- Coastal waters of South America (Peru to Argentina). In New Zealand, a very rare visitor with only a handful of records. May be a vagrant or misidentified. Not resident.
- Endemism
- Migratory Native
- Main Threats
- Bycatch in fishing gear is a significant threat in its native range. Very rarely recorded in New Zealand, so no local threats apply. Global population status is poorly known.
- Population
- This species is an extremely rare visitor to New Zealand waters. Only a few records exist, and some may be misidentifications. No formal population assessment exists for New Zealand visitors.
- Conservation Status
- Not Threatened
An extremely rare visitor to New Zealand from South America. A porpoise that is a long way from home.
This porpoise is named after German zoologist Hermann Burmeister. Only a handful of records exist, and some of those may be misidentifications. It is very similar in appearance to the spectacled porpoise, and distinguishing the two requires careful examination. The species is shy and elusive, rarely seen even in its native range along the coasts of Peru, Chile, and Argentina. A porpoise that does not want to be seen.
Burmeister's porpoise has a distinctive dark grey to black body with a lighter belly. The dorsal fin is unusually tall and pointed, located far back on the body. The species is a deep diver, hunting near the seafloor for fish and squid. It is not known to bow-ride or interact with boats. It surfaces briefly and disappears, making it difficult to study. Most of what is known about its behaviour comes from animals caught accidentally in fishing nets. A porpoise that is known mostly by its deaths.
Why would a South American porpoise appear in New Zealand? The most likely explanation is that it is lost. The individuals found here may have been carried by currents or disoriented by storms. They may have followed a warm water mass across the Pacific. Or they may not be Burmeister's porpoises at all. Some records may be misidentified spectacled porpoises or other species. Until genetic evidence confirms the sightings, the mystery remains.
The porpoise from South America is a puzzle, and New Zealand is a long way from home. The beach is cold. The porpoise lies on the sand, dark grey and still. It should be in South America. It is here instead.
No one knows why. The porpoise is not saying.