It is common to see open and closed fishing seasons for snook. Closed seasons are very common, especially after some of the cold winters that have led to huge fish kills. During a closed season, you can still catch snook, but you must release them immediately after you catch them. The closed seasons are in place to ensure a healthy population of snook for future generations. Make sure you check your state’s regulations before you go out and fish for snook. The regulations will vary by state and often can vary from the different regions within the state.