Why does Kenny tell his parents about his near drowning?

Kenny tells his parents about his near drowning because he feels a sense of guilt and fear about the incident. Sharing his experience allows him to confront his emotions and seek their understanding and support. Additionally, he recognizes the importance of honesty and communication within the family, especially after a frightening experience. By opening up, he can also foster a deeper connection with his parents and address any underlying concerns they may have.