On Saturday, police say two people were cliff diving in Silver Harbor in Shuniah Township.
Both divers had difficulty with the wave action.
While the woman was picked up by some people passing by on personal watercraft, her male companion couldn't be located.
The OPP say 26 year old Marlene Fox from the Big Trout Lake First Nation succumbed to her injuries yesterday.
32 year old Kevin Spade from Sioux Lookout has been identified as the missing man.