Killer whales of the Northwest Atlantic

Did you know that killer whales live in our waters? Long considered rare in eastern Canada, they are now seen more often in the Gulf of St. Lawrence, near Labrador, Newfoundland and the Maritimes. Labo Morissette is currently conducting a study to better understand their presence, behavior and threats.​

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What's a killer whale? 

The killer whale (Orcinus orca) is a marine mammal of the dolphin family. Majestic and intelligent, it can reach 9 meters in length and weigh over 5 tons. They live in close-knit groups, hunting as a team like wolves... but in the ocean!

 

Fun facts :

• Killer whales have different vocal dialects in different groups.

• Females generally lead the family.

• They can live to be over 80 years old.

• They have unique hunting cultures, depending on the region.

• Their breath can be heard over 300 meters away.

• They can fly at 56 km/h.

 

Presence in Eastern Canada

We know more about the killer whales of British Columbia, but those of the North Atlantic remain mysterious. And yet, they are there: recent sightings confirm their passage through the Gulf. Labo Morissette researchers are tracking these individuals to understand who they are, what they eat (minke whales, porpoises, seals...) and how they use our marine territory.

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Are they dangerous? 

No. No incidents have been reported in our waters. North Atlantic killer whales are generally curious but cautious, and do not interact directly with humans. However, it's important to respect their space: keeping a safe distance is essential for their well-being.

📏 Important reminder: In Canada, it is forbidden to approach within 400 meters of a killer whale in the North Atlantic.

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How to recognize them?

• Large, black, triangular dorsal fin (up to 2 meters in males).

• White spot behind the fin.

• Black back, white belly.

• Juveniles are often paler gray.

• Females have a more curved fin.

 

Why protect them?

Killer whales are vulnerable:

• to noise pollution (maritime traffic),

• to a decline in prey,

• to contaminants that accumulate in their fat.

They are not yet well protected in the Atlantic. Helping scientists document their presence is a contribution to their survival.

 

Contribute to science!

This project is based on collaboration between scientists and the general public. Each photo or observation transmitted brings us closer to a better understanding of - and therefore a better cohabitation with - these marine giants.