Dive into 'The Blue Shark,' a captivating installment by Mahmoud Salem within the popular 'The 13 Devils Collection for Youth.' This thrilling adventure, published as part of Al-Hilal Books for Boys and Girls, takes young readers on an exciting journey. The story likely involves a high-stakes encounter with a mysterious blue shark, presenting challenges and puzzles for the brave protagonists of the '13 Devils' team to solve. Prepare for suspense, clever deduction, and an unforgettable nautical mystery as they navigate dangerous waters to uncover the truth.