As the waters of the Gulf of St. Lawrence warm up, new Canadian research suggests the diets of some baleen whales are shifting. Advertisement AdvertisementAdvertisement Advertisement"Our study shows that whale species are able to adjust their diet to varying availability of preferred prey," Tessier-Larivière explained to CBC News via email. And what happens if these prey species decline? In the later years of study, more forage fish signatures were found in the tissues of all three whale species. "The area studied in the St. Lawrence whale paper was not in a marine protected area, although there are existing protected areas deeper into the St. Lawrence.

Source: CBC News January 23, 2026 13:55 UTC