Takamasa Ishihara

Lost at sea on a rubber raft. No food. You try to eat a seagull. Doesn’t go down well (it comes right back up), so you eat small sharks raw. Constant vigilance is necessary; bigger sharks leap into the raft to get at you. Storms. Only rainwater to drink. Try that for 47 days. Then get captured by hostile forces and beaten black and blue, for a long, long, time.