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Whales and Seals of the St. Lawrence

 

Marine mammals are regulars in the estuary and Gulf of St. Lawrence, dynamic and rich marine environments. Thanks to tides, underwater topography, and currents, these areas experience exceptional concentrations of fish and plankton. It's no wonder that the St. Lawrence is one of the best places in the world for whale watching: it's like an open-air buffet!

Discover the thirteen species of cetaceans found in the St. Lawrence! Most only pass through seasonally, except for the beluga, which resides there year-round. You'll also find three species of seals that are regularly observed in the region.

Download the PDF Baleines & Phoques du Saint-Laurent (french) of the GREMM

Living alongside whales

Navigating through whale habitat, whether by kayak, sailboat, or motorboat, requires a deep understanding and heightened vigilance. In the estuary, Gulf of St. Lawrence, and Saguenay River, strict rules govern navigation to protect whales.

Taking a specific training course can help you gain the necessary knowledge to protect these valuable marine mammals and obtain certification.

 
 

 

Blue whale

The Saint Lawrence is one of the few places on the planet where one can observe the largest animal in the world near the coasts. It comes here to feed on krill. Decimated by hunting, this species is believed to number only a few hundred individuals in the North Atlantic.

21 TO 26 M, UP TO 30 M
80 TO 120 T, UP TO 135 T
LIFESPAN: 90 YEARS
DIVE: 10 TO 30 MINUTES

 

 

Fin whale

Nicknamed the "greyhound of the sea," this second giant of the planet is one of the fastest, reaching speeds of up to 40 km/h! The coloring of its jaw is different on the left side (dark) and the right side (pale). During the day, its dives usually reach 100 meters... that's five times its length!

18 TO 21 M, UP TO 27 M
40 TO 50 TONS
LIFESPAN: 75 TO 100 YEARS
DIVE: 5 TO 15 MINUTES, UP TO 25 MINUTES

 

 

North atlantic right whale

The whale as one imagines it: round and plump! It was nearly exterminated in the North Atlantic by the late 1800s. Today, the remaining survivors are highly threatened by boat collisions and accidental catches in fishing gear.

10 TO 15 M, UP TO 17 M
30 TO 60 TONS
LIFESPAN: OVER 80 YEARS
DIVE: 6 TO 8 MINUTES, UP TO 60 MINUTES

 

 

Sperm whale

The Moby Dick of Herman Melville is found in all the world's oceans and prefers very deep waters where it hunts squid and fish. Males migrate to cold waters in the summer before joining females in tropical waters in the winter. Since 1991, it has been occasionally observed in the estuary.

11 TO 15 M, UP TO 18 M
15 TO 40 TONS, UP TO 50 TONS
LIFESPAN: 50 TO 70 YEARS
DIVE: 15 TO 90 MINUTES, UP TO 2 HOURS

 

 

Humpback whale

A singer and acrobat, it often raises its tail out of the water when diving. Its pectoral fins are very long and white. It is the best-known of the great cetaceans. Over 7,500 humpback whales traverse the thousands of kilometers each year that separate their breeding grounds in the Caribbean from their feeding grounds in the North Atlantic.

11 TO 13 M, UP TO 16 M
25 TO 30 TONS, UP TO 35 TONS
LIFESPAN: 30 TO 50 YEARS
DIVE: 8 TO 15 MINUTES, UP TO 30 MINUTES

 

 

Killer whale

The largest of the dolphins is present almost everywhere in the world. A great hunter, it can attack animals much larger than itself. In the Pacific, it lives in very stable family groups. In the North Atlantic, they are few in number and scattered. Observations in the St. Lawrence are rare.

6 TO 7 M, UP TO 10 M
3 TO 7 T
LIFESPAN: 50 YEARS (MALES), 100 YEARS (FEMALES)
DIVE: 3 TO 5 MINUTES, UP TO 20 MINUTES

 

 

Northern bottlenose whale

Like the sperm whale, this whale is an expert in deep and long-duration dives. A small population lives off the coast of Nova Scotia. The only individuals observed in the St. Lawrence had stranded alive. Noise pollution is one of the threats affecting the species: bottlenose whales have perished elsewhere due to intense underwater noises associated with underwater exploration and military exercises.

6 TO 10 M
3 TO 7 T
LIFESPAN: 40 YEARS
DIVE: 3 TO 70 MINUTES, UP TO 2 HOURS

 

 

Minke whale

It is the smallest of the rorquals. When hunting fish near the coast, its pinkish belly is sometimes visible on the surface. Abundant throughout its distribution range, it is hunted in certain areas of the world.

6 TO 9 M, UP TO 10 M
6 TO 8 T, UP TO 10 T
LIFESPAN: 50 YEARS
DIVE: 2 TO 10 MIN, UP TO 20 MIN

 

 

 

Long-finned pilot whale

With dark skin, a massive body, and a prominent melon on its head, the pilot whale doesn't have the typical appearance of other members of the dolphin family. It forms stable family groups of several dozen individuals. It's a regular visitor to the gulf, but rarely ventures up into the estuary. It's known for its mass strandings.

4 TO 5 M, UP TO 8 M
2 TO 3.5 T
LIFESPAN: 45 YEARS (MALES), 60 YEARS (FEMALES)
DIVE: 5 TO 20 MINUTES

 

 

Beluga

Among cetaceans, it has the most varied vocal repertoire. This Arctic species also has a small population in the St. Lawrence, where it underwent sustained hunting that ended in the 1970s. Considered endangered, this population now has to survive in a degraded environment.

WARNING! It is prohibited to approach within 400 meters of a beluga. If one approaches your vessel, move away slowly and cautiously.

4 TO 5 M
0.7 TO 1.5 T, UP TO 2 T
LIFESPAN: 60 TO 80 YEARS
DIVE: 2 TO 15 MINUTES

 

 

White-beaked dolphin

These two species form herds of hundreds of individuals. Curious and dynamic, they ride the waves of ships. The white-beaked dolphin occasionally visits the estuary. Both species regularly visit the gulf.

2 TO 3 M
180 TO 350 KG
LIFESPAN: 30 YEARS
DIVE: 1 TO 2 MINUTES

 

 

White-sided dolphin

These two species form herds of hundreds of individuals. Curious and dynamic, they ride the waves of ships. The white-sided dolphin occasionally visits the estuary. Both species regularly visit the gulf.

2 TO 2.7 M
180 TO 230 KG
LIFESPAN: 30 YEARS
DIVE: 1 TO 2 MINUTES

 

 

Gray seal

It is one of the largest seals in the St. Lawrence. It leaves the estuary for the cold season and breeds on the ice near Prince Edward Island and Sable Island, off the coast of Nova Scotia. It is abundant in the St. Lawrence. Rather gregarious on land, it is solitary when feeding at sea.

2 TO 2.4 M
225 TO 300 KG
LIFESPAN: 35 YEARS
DIVE: UP TO 30 MINUTES

 

 

 

Harbor porpoise

The harbor porpoise is the smallest cetacean in the St. Lawrence and one of the smallest in the world, so much so that it is barely seen and heard. Females give birth each year in early summer. In the 1990s, thousands of porpoises died each year, accidentally caught in fishing nets. The situation has improved but remains concerning.

1.5 TO 2 M
45 TO 50 KG, UP TO 65 KG
LIFESPAN: 10 TO 13 YEARS
DIVE: 1 TO 3 MINUTES, UP TO 12 MINUTES

 

 

Greenland seal

It is a winter visitor to the St. Lawrence, but it is increasingly observed in the summer. It often forms large groups whose movements on the surface literally churn the water. The population in the St. Lawrence is estimated to be a few million and is subject to commercial hunting.

1.6 TO 1.9 M
85 TO 100 KG
LIFESPAN: 30 YEARS
DIVE: UP TO 15 MINUTES

 

 

Common seal

This small coastal seal resides year-round in the St. Lawrence. It lives in groups on land while in the water it is solitary. In the estuary, the birthing period extends from mid-May to mid-June. Considered "not at risk," however, it is unknown how many individuals frequent the Saguenay-Saint-Laurent Marine Park area.

1.45 TO 1.55 M
100 KG
LIFESPAN: 20 YEARS
DIVE: BETWEEN 2 AND 30 MINUTES

 

Quelques baleines connues du Saint-Laurent

 

 

JAW-BREAKER (B246)

Jaw-Breaker is among the 15 to 18% of blue whales in the Saint-Laurent that show their tail when they dive. When she raises her tail, the white patch located on the edge of the left lobe is visible. Very faithful to the estuary, this female had a calf in 2022.

 

 

 

 

CAÏMAN (BP034)

Caïman est l'un des rorquals communs les plus souvent identifiés dans le parc marin du Saguenay-Saint-Laurent ! La première observation remonte en 1986 ! À cette époque, cette femelle semblait déjà être une adulte.

 

 

 

 

MISS FRONTENAC (BI2286)

Miss Frontenac is the first beluga to be tracked through photo-identification since her very first year. A deep scar appeared on her back a few weeks after her birth in 2004, allowing researchers to recognize her throughout the years. Becoming a mother herself, she gave birth to her first calf in 2014. In 2008, she was adopted by Fairmont Le Château Frontenac as part of the Adopt a Beluga campaign.

 

 

 

 

TIC TAC TOE (H509)

Diligent visitor of the Saint-Laurent, Tic Tac Toe wasn't even a year old when she was first observed in 1997, traveling with her mother, Quartz. Over the years, she has brought several calves into the Saint-Laurent, including Aramis, born in 2007, who is now a mother herself! She is distinguished by the "X" visible on the right lobe of her tail.