When you're diving open water you need to let the boaters know you're
down below. A scuba diver down flag serves as warning to stay away from
area of the flag. That way you know it's safe to surface without
worrying if a boat will run over you.
On this page you'll find a scuba flag to fly when you need an
unpopulated place to end your dive.
This flag is made of vinyl. If you need a low-cost safety marker it's
the dive flag you need.
Click the link for more information: Dive
Flag 14" X 16" Scuba Diving Safety Flag
Here's a flag made with nylon
material for durability:
Scuba Diver Down Diving Boat Flag w/ Stiffener Dive 20" x 24"
here's a flag with a built in float. The float is inflatable, and
deflatable, to take up less space during storage: Inflatable
Dive Float with Flag Scuba Maxs, 12" x 15" (DF03)
Diving outside the United States? The International Dive Flag is blue
and white rather than red and white:
Universial Scuba Dive Flag Diving Divers International Flag Blue Dive