The Purple Flag at the Beach: The Important Warning Most Beachgoers Ignore

What the Purple Flag Does NOT Mean

Let me clear up common misconceptions.

• It does NOT mean the water is polluted.

• It does NOT mean there are dangerous currents (that’s red or yellow).

• It does NOT mean the beach is closed.

• It does NOT mean there are alligators or crocodiles (that would be a different warning system).

The purple flag is specific to marine pests—stinging, biting, or venomous sea life.

The Most Common Marine Pests (And What to Do If You’re Stung)

Let me walk you through the most frequent purple flag culprits.

1. Jellyfish (The Most Common)