What is the rising action in The Old Man and the Sea?

The rising action in "The Old Man and the Sea" involves Santiago's struggle with the marlin and his battle against nature's forces. As he hooks the large fish and engages in a physical and mental challenge to bring it back to shore, tension and suspense build as Santiago's determination and endurance are put to the test. This section of the story also highlights the themes of perseverance, struggle, and resilience.