Many of the survivors were injured and all suffered from lack of food and water (leading to dehydration and hypernatremia; some found rations, such as Spam and crackers, among the debris of the Indianapolis), exposure to the elements (dehydration from the hot sun during the day and hypothermia at night, as well as severe desquamation due to continued exposure to salt water and bunker oil), and shark attacks, while some killed themselves or other survivors in various states of delirium and hallucinations.[27][28] Only 316 of the nearly 900 men set adrift after the sinking survived.[3] Two of the rescued survivors, Robert Lee Shipman and Frederick Harrison, died in August 1945.