Northern Minke Whale (Balaenoptera acutorostrata)
A mid-sized whale, black on the back and pink, white belly, with curved dorsal fin. Migratory whale spending summer in the arctic and winter in the tropics.
At a Glance – Northern Minke Whale
When is the best time to see Northern Minke Whales in Québec?
Late spring through summer is usually the most productive period in the St. Lawrence system.
- Seasonal window: Warm season, especially summer.
- Reliable areas: Tadoussac, Les Escoumins, and Les Bergeronnes.
- Encounter style: Sightings are often brief because minke whales surface quickly and low.
How can I identify a Northern Minke Whale in the field?
Look for a small-to-medium rorqual with a pointed head, low quick surfacing, and a small curved dorsal fin.
- Key marks: Pointed rostrum, compact body, and quick low-profile surfacing.
- Compared with Fin/Humpback: Much smaller profile and less dramatic surfacing.
- Local comparison aid: Identifying Whales in Saguenay St. Lawrence Marine Park.
What does the Northern Minke Whale eat in the St. Lawrence region?
Northern Minke Whales are opportunistic baleen predators that feed on fish and krill.
- Main prey: Small schooling fish plus krill.
- Common local fish: Herring, capelin, and sand lance.
- Seasonal dynamic: Feeding activity strengthens in productive northern waters during the warm season.
Identification and Similar Species
Northern Minke Whale is identified by its small-to-medium size, pointed head, and low, quick surfacing profile compared with larger rorquals.
Reliable field marks are the small body size for a rorqual, pointed rostrum, and a small curved dorsal fin that appears after a low, quick surfacing.
For practical side-by-side local comparison, see Identifying Whales in Saguenay St. Lawrence Marine Park.
Similar species
- Fin Whale (Balaenoptera physalus) - Much larger and more elongated, with a taller surfacing profile.
- Humpback Whale (Megaptera novaeangliae) - Much larger with very long pectoral fins and frequent fluke display.
- Beluga Whale (Delphinapterus leucas) - White adult colour and no dorsal fin.
Photographic Field Records – Québec
Observed Behaviour - Québec (Field Recordings)
Surfacing Recorded 2021-08-25 in Parc marin du Saguenay-Saint-Laurent A Northern Minke Whale surfaces low and fast in calm water, showing its compact profile before disappearing just below the surface.
Best Locations and Seasons for Sightings
In Québec, Northern Minke Whale is a regular warm-season species in the Saguenay-St. Lawrence Marine Park and nearby sections of the St. Lawrence.
My local notes include participation in a two-week minke whale research program in this region with Mériscope.
From local observations, late spring through summer is productive, including around Tadoussac, Les Escoumins, and Les Bergeronnes.
Minke encounters are often brief and low-profile; they usually surface quickly and can be easy to miss in choppy conditions.
| Location | Spring | Summer | Autumn | Winter |
|---|---|---|---|---|
| Saguenay St. Lawrence Marine Park | - | x | - | - |
"x" indicates the species was observed, while "-" indicates no observation. Lack of observation doesn't necessarily imply that the species is absent. Data is derived from my park visit journals.
Fact Sheet
Common Names
| 🇨🇦 | Northern Minke Whale |
| 🇫🇷 | Petit Rorqual, Baleine de Minke |
| 🇩🇪 | Zwergwal |
| 🇲🇽 | Ballena de minke común, Ballena enana |
Taxonomy
| Order | Artiodactyla |
| Infraorder | Cetacea |
| Family | Balaenopteridae |
Characteristics
| Length | 6-8m |
| Weight | 2-4.5t |
Ecology and Behaviour
Distribution
Northern Minke Whale is native to the North Atlantic and North Pacific, using temperate to subarctic marine waters and moving seasonally with prey availability (Wikipedia; EOL).
In eastern Canada, it is regularly present in the Gulf and Estuary of the St. Lawrence, where shelf and coastal feeding habitats support summer occurrence.
The species is globally listed as Least Concern, though regional pressures include fishing-gear entanglement, ship strikes, underwater noise, and climate-driven prey shifts (Wikipedia; NOAA Fisheries).
Diet
Northern Minke Whale is a baleen filter-feeding predator with a flexible, opportunistic diet that varies by region and season.
- Main prey: Small schooling fish and krill.
- Common regional fish prey: Herring, capelin, sand lance, and related forage fish.
- Seasonal pattern: Feeding intensity increases in productive northern waters during the warm season.
References – Northern Minke Whale
Most content on this page is based on my direct field observations. General species background (taxonomy, range, and broader ecology) is informed by the sources listed below.
- EOL - Taxonomy and species profile
- Wikipedia - Broad species overview and background
- Mingan Island Cetacean Study - Regional profile for St. Lawrence waters
- NOAA Fisheries - Identification and conservation context
- Mériscope - Marine research center specialized on minke whales
All content on this page — including photos, videos, and field audio recordings — was created by Karl-Heinz Müller, a Montréal-based wildlife filmmaker, sound recordist, and photographer. Founder of MUUUH and Québec Sauvage, he has spent over a decade documenting Canada’s natural habitats through immersive soundscapes and wildlife films. Learn more about Karl-Heinz
Last updated: 2026-05-27