Turns out it was not a bull shark in Lake Ontario. It was just plain bull.

Purported sightings of a freshwater-friendly bull shark near Kingston, fuelled by a YouTube video posted last Friday, ‎were false.

The Discovery channel fessed up Wednesday afternoon to posting the video to promote “shark week” programming.

The move came ‎after reporters asked Ontario Natural Resources Minister Bill Mauro about the possibility that a rogue shark had swum up the St. Lawrence River.

Mauro was skeptical, saying no crews had been dispatched to search and urged citizens to report any sightings to authorities.

“Just when you thought it was safe to go back in the water,” he joked in a reference to the movie Jaws, released 39 years ago.

NDP Leader Andrea Horwath had branded the possibility of such a predator in Lake Ontario as “bullshark” and said she wouldn’t be afraid to go for a swim.

Discovery president Paul Lewis admitted in a statement the video used a “life-like prosthetic model shark” to raise the question “could sharks surface in the Great Lakes?”

Apparently not.

“This video has certainly sparked the conversation about sharks,” Lewis said.