Toronto police pulled an unconscious woman from Lake Ontario on Thursday morning.
Police said a dog walker spotted the woman in the water near Sugar Beach, at Queen's Quay and Dockside Drive, around 8:42 a.m.
Police officers and marine unit officers raced to the scene and entered the water to get the woman. Officers performed CPR on the woman after she was placed onto a marine unit boat.
Police have alerted paramedics, who are set to transport the woman from the marine unit's headquarters.