Dive Flags show info...

Make sure those on the surface know you're underwater with these safety dive flags from The Scuba Doctor. A diver down flag, or scuba flag, is a flag used on the water to indicate that there is a diver below. In Australia and internationally, the code flag alpha, which is white and blue, is used to signal that the vessel has a diver down and other vessels should keep well clear at slow speed. (In North America it is conventionally red with a white stripe from the upper left corner to the lower right corner.)