What does the red flag with a white stripe indicate in scuba and snorkeling?

The red flag with a white stripe serves as a crucial safety signal in scuba and snorkeling activities, indicating that divers are present in the area. This flag alerts boat operators and other water users that vessels must maintain a safe distance to avoid potential accidents and ensure the safety of divers. The presence of this flag signifies that individuals are underwater, where visibility may be limited, and the risk of collision with boats increases if operators do not exercise caution.

Knowing this can help boaters recognize the importance of respecting the designated area around the flag, which is crucial for preventing hazards and ensuring the safety of everyone involved in water activities. The other options suggest different interpretations that do not align with the established maritime safety signals associated with diving activities.