The theme of The Old Man and the Sea is everyone has bad luck it is perseverance that sets people apart.
“Only I have no luck any more. But who knows? Maybe today. Every day is a new day. It is better to be lucky. But I would rather be exact. Then when luck comes you are ready” (Hemingway, 31). The old man knows he has bad luck but continues to persevere and keep trying by being exact with his fishing. This pays off when he hooks the Marlin.
The purpose of The Old Man and the Sea was to entertain Ernest Hemingway does this by having many exciting events that he explains in detail.
"He saw him first as a dark shadow that took so long  to pass under the boat that he could not believe its length"(90/89)
WOW! What happened next?
“Fish,” the old man said. “Fish, you are going to have to die anyway. Do you have to kill me too?”(91)
The lions on the beach that the old man dreams of represents the audience because, the intended audience is people who dream of going to the Sea much like Santiago dreams of Africa.