The Meaning of a Purple Flag at the Beach

Alright, so you know all those colored flags they put up at the beach? Most people know the basics. Green = the water is good, red = you are probably going to die if you swim, yellow = “okay, it is not great, but maybe consider swimming.” But then there is that other flag. The purple flag. Have you ever noticed it?

I know I must have strolled past tons of purple flags and never even thought about them until one day it just hit me. What the hell is a purple flag? I mean, I thought I had the beach flag system figured out. Green, yellow, red, and even the one that says double red, and just basically means go home. But a purple flag? That is not a normal flag designation, is it?

Turns out it absolutely is. Also, it is not some wannabe lifeguard just painting the tower.

So I started looking it up. A purple flag means there are… marine pests in the water. Which is such a strange and polite term. Pests? That could really be anything from an annoying bug to maybe something that harms you and ruins everything you had planned for that day. In this case, it is more the latter; think jellyfish. Think stingrays. And maybe some other creatures with barbs and spines that don’t want you around and are going to let you know if you try to hang out with them.

Alright, now we know. If you see a purple flag flapping in the breeze, there could be things in the water that sting, poke, or zap you. This does not mean there is a jellyfish invasion, but there could be. Basically, a purple flag is the beach’s way of saying, “You can go in; however, do not be surprised if something brushes against your ankle and you come out itchy and angry.”