Scientists say the grass carp population in the Chambly Basin is probably small, but the presence of this species in any number is bad news.

A video posted to social media shows the seal sunbathing on a floating dock in Laval, close to where the Mille Îles River joins the St. Lawrence River.

“It’s extremely rare. For the Quebec Mammal Emergency Network it’s a first,” said Marie-Ève Muller, a spokesperson for GREMM. “We’ve had minke whales before, belugas but for such large whale like a humpback whale, it’s a first​.”