Diver Down Flag - Recognize the Blue-and-White Warning Signal #1232758 (License: Personal Use)

The diver down flag features a vertical white stripe on the left and a blue triangle on the right, bordered in black, representing international recognition for active scuba diving operations. It is flown from boats or buoys to signal that divers are in the water and that vessels must proceed with caution. In many jurisdictions, displaying this flag is legally required when diving within specified distances of the surface activity.

Used on dive boats, shore entries, and buoy markers; this image supports marine safety content, dive certification guides, boating regulations pages, and recreational diving resources. Matches user intent for identifying warning signals, understanding maritime rules, or preparing for diving trips.