How would you summarize "The Old Man and the Sea" by Hemingway?

The Old Man and the Sea by Ernest Hemingway is a short novel that Hemingway wrote in 1951 and that was first published in 1952. The work is written in the third person, using Hemingway's characteristic simple language and syntax. The third person narrator of the story is omniscient, having access to the actions and minds of all characters in the story. The narrator is not intrusive, and does not break the illusion of the story by directly addressing readers or reflecting on the fictional nature of the story. 
The two main characters of the story are Santiago, an aging Cuban fisherman, and Manolin, a young boy who was his apprentice. Santiago has been unlucky and gone 85 days without catching a fish. On the 86th day, he sets out to sea and manages, in a heroic battle, to catch an 18-foot marlin, but sharks follow the scent of its blood and eat most of its flesh before he can get it back to the harbor, meaning that he will not be able to earn much money from it. Santiago is badly injured in this voyage. Manolin, who has had faith in Santiago despite the long run of bad luck, feels vindicated in his faith in Santiago by this record catch.