Two men have died after their canoe capsized in the Kawartha Lakes area Sunday afternoon, Ontario Provincial Police (OPP) say. 

Emergency responders were dispatched to a boat accident on Sturgeon Lake just after 3 p.m., OPP said in a news release on Sunday. 

They say a canoe was carrying three males, one of whom was able to swim back to shore after the boat flipped.

Officers say the other two men could not stay afloat and didn't survive.

Police say nobody in the canoe was wearing life-jackets.

They warn all people should wear life-jackets or personal floatation devices when boating.

"With capsized vessels and falling overboard [being] the top contributing factors in boating deaths every year, a significant number of lives stand to be saved if boaters, personal watercraft users and paddlers wore a lifejacket or personal floatation device," OPP said in the news release.