How does Pi use story telling to ensure his survival

He uses story telling by righting in his journal, Pi needed someone to talk to. He rights about the different wonders he saw at sea. Pi also rights about. How he provides food for himself. The water in the ocean is salt water. This boy manages to figure out a way. How to convert salt water into fresh, drinking water. Pi journal flew away with the wind. This guy needed away to talk about his struggles at sea.