Santiago straps the marlin to his skiff and heads home, triumphant. However, in a short while, sharks are attracted to the trail of blood left by the marlin in the water. Santiago kills one with his harpoon, losing that weapon in the process. He makes a new harpoon by strapping his knife to the end of an oar to help ward off the next line of sharks and manages to kill a few more. Soon, however, the sharks have devoured the marlin's entire carcass, leaving only its skeleton. The old man castigates himself for sacrificing the marlin.