Poon Lim

"Poon Lim or Lim Poon BEM (March 8, 1918 – January 4, 1991) was a Chinese sailor who survived 133 days alone in the South Atlantic."

"Poon Lim initially kept himself alive by drinking the water and eating the food on the raft, but later resorted to catching rainwater in a canvas tarp and fishing. He could not swim very well and often tied a rope from the boat to his wrist, in case he fell into the ocean. He took a wire from the electric torch and made it into a fishhook, and used hemp rope as a fishing line. He also dug a nail out of the boards on the wooden raft and bent it into a hook for larger fish. When he captured a fish, he would cut it open with a knife he fashioned out of a biscuit tin and dry it on a hemp line over the raft. Once, a large storm hit and spoiled his fish and fouled his water. Poon, barely alive, caught a bird and drank its blood to survive."

Check out this whole story. It's amazing what people are capable of surviving when they have to.

Read more here: 

http://en.wikipedia.org/wiki/Poon_Lim