Old Man and the Sea is the story of an epic struggle between an old, seasoned fisherman and the greatest catch of his life. For eighty-four days, Santiago, an aged Cuban fisherman, has set out to sea and returned empty-handed. So conspicuously unlucky is he that the parents of his young, devoted apprentice and friend, Manolin, have forced the boy to leave the old man in order to fish in a more prosperous boat. Nevertheless, the boy continues to care for the old man upon his return each night. He helps the old man tote his gear to his ramshackle hut, secures food for him, and discusses the latest developments in American baseball, especially the trials of the old man’s hero, Joe DiMaggio. Santiago is confident that his unproductive streak will soon come to an end, and he resolves to sail out farther than usual the following day.
Unable to tie the line fast to the boat for fear the fish would snap a taut line, the old man bears the strain of the line with his shoulders, back, and hands, ready to give slack should the marlin make a run. The fish pulls the boat all through the day, through the night, through another day, and through another night. It swims steadily northwest until at last it tires and swims east with the current. The entire time, Santiago endures constant pain from the fishing line. Whenever the fish lunges, leaps, or makes a dash for freedom, the cord cuts Santiago badly. Although wounded and weary, the old man feels a deep empathy and admiration for the marlin, his brother in suffering, strength, and resolve.
As Santiago sails on with the fish, the marlin’s blood leaves a trail in the water and attracts sharks. The first to attack is a great mako shark, which Santiago manages to slay with the harpoon. In the struggle, the old man loses the harpoon and lengths of valuable rope, which leaves him vulnerable to other shark attacks. The old man fights off the successive vicious predators as best he can, stabbing at them with a crude spear he makes by lashing a knife to an oar, and even clubbing them with the boat’s tiller. Although he kills several sharks, more and more appear, and by the time night falls, Santiago’s continued fight against the scavengers is useless. They devour the marlin’s precious meat, leaving only skeleton, head, and tail. Santiago chastises himself for going “out too far,” and for sacrificing his great and worthy opponent. He arrives home before daybreak, stumbles back to his shack, and sleeps very deeply.