A video has popped up online of a strange, finned-creature swimming in Lake Ontario, near Kingston.
The accompanying description on YouTube claims that the video was taken on July 10, while fishing off Wolfe Island.
While the video is entitled "Shark in LAKE ONTARIO!!," the poster asks others who believe it is a catfish to "identify what type" it may be.
And so begins the controversy.
Andy Dehart, the director of husbandry at Ripley's Aquarium, told CBC News he is "fairly confident" the creature seen online is not a bull shark.
Dehart said the water is too cold for them. He also said it would be "very unusual" for a bull shark to be in that area and to have the appearance of the creature in the video.
The National Post reports that there has been more than one sighting of the creature, whatever it may be.
At Queen’s Park, National Resources Minister Bill Mauro called for members of the public to report any further sightings. He also urged people to stay safe.
The governing Liberals say no one has been sent to investigate the matter.
The story spurred the Progressive Conservatives to joke that the unidentified creature was a Liberal that had lost its way.
NDP Leader Andrea Horwath said her party has more experience with sharks in the legislature than those in the water.
The supposed shark sighting comes just over a week after another creature made headlines showing up somewhere unexpectedly.
A caiman, which is a close relative of an alligator, was seen swimming in a pond in Toronto earlier this month. It was subsequently captured.