Read more: Manitoba man drowns while scuba diving: RCMP
The other two occupants, both 24-year-old men, helped pull the victim out of the water and onto the shore.
The man was pronounced dead by EMS after attempts at medical assistance were unsuccessful.
Police said no life jackets were in use at the time of the incident, but alcohol isn’t believed to be a factor.
RCMP continue to investigate with the help of the Office of the Chief Medical Examiner.