Grey Seals of Québec: Autumn Encounters with One of the Gulf's Top Predators
Along the rugged coastlines and islands of Québec, autumn brings dramatic scenery, crisp sea air, and one of eastern Canada's most charismatic marine mammals: the grey seal. With their large, expressive eyes, distinctive long noses, and curious nature, grey seals are a highlight for wildlife enthusiasts exploring the Gulf of St. Lawrence in the fall.
As the seasons change and the waters cool, these remarkable animals become increasingly active, offering incredible opportunities for observation and photography along Quebec's coast.
Meet the Grey Seal
Grey seals (Halichoerus grypus) are among the largest seal species found in Atlantic Canada. Adult males can weigh over 300 kilograms and are easily recognized by their robust build and elongated, horse-like profile. Females are smaller and typically display lighter silver-grey coats decorated with dark spots, while males often appear darker with lighter markings.
Their range extends across the North Atlantic, but the waters surrounding Québec support one of the world's largest populations. The Gulf of St. Lawrence serves as an important feeding area, haul-out site, and breeding habitat for these marine mammals.
Unlike some seal species that spend extended periods resting on ice, grey seals frequently haul out on rocky islands, sandbars, and remote shorelines. During calm conditions, it is not unusual to see groups resting together, occasionally lifting their heads to observe passing boats or curious photographers.
Why Fall Is Such a Great Time to See Grey Seals
Autumn is one of the best seasons to encounter grey seals in Québec. As water temperatures begin to drop, marine productivity remains high and fish populations are abundant. This creates ideal feeding conditions for seals preparing for the energetic demands of winter and the upcoming breeding season.
In the fall, seals can often be observed:
Hauling out in larger groups on rocky islands and coastal ledges.
Actively foraging in productive feeding areas.
Socializing and interacting at the surface.
Moving frequently between feeding grounds and resting sites.
The combination of dramatic autumn colours along the shoreline, soft lighting, and increased seal activity makes this season especially rewarding for photographers.
What Do Grey Seals Eat?
Grey seals are highly adaptable predators with a varied diet that changes depending on season, location, and prey availability. They are opportunistic hunters, feeding on a wide range of fish and invertebrates throughout the year.
During the fall in Québec, their diet is particularly influenced by the seasonal abundance of fish within the Gulf of St. Lawrence. Common prey species include:
Atlantic herring
Capelin
Atlantic cod
Sand lance
Mackerel
Flatfish such as flounder
Squid and other cephalopods
Autumn herring aggregations are especially important. Schools of herring gather in coastal waters during this time, creating concentrated feeding opportunities for grey seals. Seals often dive repeatedly through these schools, using their agility and excellent underwater vision to capture prey.
Grey seals are capable of diving to impressive depths and can remain underwater for extended periods while searching for food. Their streamlined bodies, powerful flippers, and sensitive whiskers make them exceptionally efficient hunters in the often murky waters of the Gulf.
As apex predators, grey seals play an important ecological role by helping maintain balance within marine ecosystems. Their presence is a sign of healthy, productive coastal waters.
Experiencing Grey Seals in Québec
Watching a grey seal surface beside a boat, hearing the distant calls from a haul-out site, or photographing a curious individual peering through calm autumn waters is an unforgettable wildlife experience. These encounters offer a powerful reminder of the rich marine life that thrives along Québec's coastline.
Join Wildsight Expeditions in Québec during the fall and experience these incredible marine mammals firsthand. Our autumn expeditions provide exceptional opportunities to observe and photograph grey seals while exploring some of eastern Canada's most spectacular coastal landscapes.