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An emblematic species is the beluga (beluga whale), but many other species are present. An identification guide for marine fishes of the estuary and northern Gulf of St. Lawrence was completed in 2008. [28]
The St. Lawrence beluga whale status was then changed to threatened in 1997. [6] However, in 2014, the designation was re-examined and changed back to endangered . [ 6 ] Up until the early 2000s, the population was growing at a rate of 0.13% each year. [ 13 ]
According to Fisheries and Oceans Canada 2023, the Estuary and Gulf of St. Lawrence planning area covers most of the Estuary and Gulf of St. Lawrence bioregion, an area with some of the warmest surface waters in Atlantic Canada during summer and the largest amount of sea ice during winter. The planning area is approximately 240,000 km².
Today, the St. Lawrence River begins at the outflow of Lake Ontario and flows adjacent to Cape Vincent, Gananoque, Clayton, Alexandria Bay, Brockville, Morristown, Ogdensburg, Massena, Cornwall, Montreal, Trois-Rivières, and Quebec City before draining into the Gulf of St. Lawrence, often given as the largest estuary in the world. [20]
For most of the 20th century, Canada was the predominant source for belugas destined for exhibition. Throughout the early 1960s, belugas were taken from the St. Lawrence River estuary. In 1967, the Churchill River estuary became the main source from which belugas were captured. This continued until 1992, when the practice was banned. [156]
Many Beluga whales breed in the cold waters at its mouth, making Tadoussac a popular site for whale watching and sea kayaking; Greenland sharks also frequent the depths of the river. The area of the confluence of the Saguenay and Saint Lawrence is protected by the Saguenay–St. Lawrence Marine Park, one of Canada's national parks.
St. Lawrence Estuary: Located at the confluence of the Saguenay and St. Lawrence rivers and adjacent to Quebec's "Saguenay Fjord National Park" (a provincial park), Saguenay–St. Lawrence protects a portion of the St. Lawrence estuary, a common feeding ground for marine mammals such as the endangered St. Lawrence beluga whale.
St. Lawrence Estuary: Located at the confluence of the Saguenay and St. Lawrence rivers and adjacent to Quebec's Saguenay Fjord National Park, Saguenay–St. Lawrence protects a portion of the St. Lawrence estuary, a common feeding ground for marine mammals such as the endangered St. Lawrence beluga whale.