Home / Mammals /

Beluga Whale (Delphinapterus leucas)

Beluga Whale is a small, toothed whale, completely white and without dorsal fin. This species is adapted to arctic and sub-arctic conditions. It swims slowly and prefers forming groups up to 10 individuals.

At a Glance – Beluga Whale

Where is the best place to see belugas in Québec?

The most reliable region is the Saguenay St. Lawrence Marine Park, especially around the Saguenay estuary and nearby Côte-Nord sectors.

• Most consistent area: Tadoussac and the lower Saguenay/St. Lawrence junction.
• Seasonality: The local population is present year-round, but viewing is often easiest from late spring to early autumn.

How can I identify a beluga quickly in the field?

Look for three combined traits: white adult body, rounded melon, and no dorsal fin.

• Body profile: Stocky whale with a low dorsal ridge instead of a fin.
• Head shape: Short, beakless head with a rounded forehead.
• Common confusion: Narwhal is usually mottled and males may show a tusk.

What do belugas eat in the St. Lawrence system?

Belugas are carnivorous and opportunistic, taking both fish and invertebrates.

• Fish prey: Includes cod, herring, capelin, sand lance, and other available species.
• Invertebrate prey: Squid, shrimp, and crabs.
• Diet pattern: Prey use shifts seasonally and by habitat, following local availability.

Identification and Similar Species

Beluga Whale is easiest to identify by its uniform white colour in adults, rounded forehead (melon), and complete lack of a dorsal fin (it has a low dorsal ridge instead).

Its body is robust, with a short beakless head and a flexible neck that allows visible head movement unlike most whales.

For a practical side-by-side comparison in local field conditions, see Identifying Whales in Saguenay St. Lawrence Marine Park.

Similar species

• Narwhal (Monodon monoceros) - Usually mottled grey and, in males, often with a long tusk. Narwhals are not present in the Saguenay system, though a single individual was reported in the St. Lawrence in 2021.
• White-beaked Dolphin - Smaller, darker body with a clear dorsal fin.
• Bowhead Whale - Much larger and darker, with a massive arched head.

Best Locations and Seasons for Sightings

In Québec, Beluga Whale is most closely associated with the Saguenay St. Lawrence Marine Park especially near the Saguenay estuary and along parts of the Côte-Nord.

The St. Lawrence population is present year-round, but observation conditions are often best from late spring to early autumn, when boat activity and shoreline viewpoints make encounters more consistent.

In my experience, the Tadoussac and lower Saguenay area remains one of the most reliable places to detect belugas from shore or on-the-water excursions.

"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.

Ecology and Behaviour

Distribution

Beluga Whale is native to Arctic and sub-Arctic marine waters across the Northern Hemisphere, including coastal seas, estuaries, and seasonally ice-covered regions (Wikipedia; EOL).

In Canada, major populations occur in the Arctic and in the St. Lawrence Estuary, where the Québec population is geographically isolated and listed as Endangered under Canadian law (Wikipedia).

Belugas use shallow coastal zones and river mouths in warmer months, then shift with ice and prey dynamics seasonally; they are not introduced outside their native wild range (Wikipedia; EOL).

Diet

Beluga Whale is an opportunistic carnivorous predator that feeds on fish and invertebrates, using echolocation to locate prey in turbid or ice-influenced water (Wikipedia).

• Fish: Cod, capelin, herring, sand lance, and other locally abundant species.
• Invertebrates: Squid, shrimp, crabs, and other benthic or pelagic prey.
• Seasonal shift: Diet composition changes by region and season as prey availability changes between estuaries/coastal waters and deeper offshore habitats.

References – Beluga 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
• Québec Science - Regional context on St. Lawrence belugas
• Whales Online (Baleines en direct) - Context on the exceptional narwhal sighting in the St. Lawrence (2021)

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: 2026-05-29