Beach flags are colorful signals used at coastal areas to indicate water conditions and safety for swimmers. Each flag color represents different levels of danger, such as red for high hazard, yellow for moderate conditions, and green for safe swimming. These flags help beachgoers make informed decisions about entering the water. Lifeguards typically monitor the beach and raise the appropriate flags based on current conditions, including wave height, currents, and weather. It is essential for visitors to pay attention to these flags to ensure their safety while enjoying the beach environment.