Ocean of Fear is centered on the sinking of the USS Indianapolis, which had been torpedoed by Japanese submarine I-58 on July 30, 1945 in the Philippine Sea. Of the estimated 900 men who survived the attack, only 317 were rescued after four days in shark infested waters. The Discovery Channel describes the event as “the worst shark attack in history.” Surviving members of the crew attended a special screening in New York City on 18 July 2007. According to the accounts of the surviving crew, most of the men died of either exhaustion, exposure to the elements, or drinking the ocean water, not from shark attacks. However, this incident is still one of the worst cases of sharks feeding on humans.