Diver Down Flag - Recognize the Standard Underwater Safety Signal #2222640 (License: Personal Use)

The diver down flag, also known as the alpha flag in some regions, features a vertical bicolour of white (hoist side) and royal blue (fly side), with the blue portion ending in a swallowtail cut. It signals that divers are in the water and that vessels must maintain a safe distance-typically 100 feet or more-depending on local regulations. The flag is used on dive boats, buoys, and personal floatation devices to enhance underwater safety.

This image is commonly used on marine safety websites, dive training materials, boating regulation guides, and government maritime portals. It serves users seeking to understand water safety signage, comply with boating laws, or prepare for scuba certification exams.