Flags at the Seaside
Red flag
You must take notice of the flags at the seaside.
If you see a red flag it means you must not enter the water at all. This includes for swimming, surfing or inflatables.
The reason for the red flag being up will be because of strong winds causing dangerous and strong waves in the sea making it unsafe. Even if you are a really experienced swimmer or surfer you must still abide by the rules and not enter the sea.