While getting stung by a jellyfish is not a situation most people have to worry about in their day to day lives, it is still a scary possibility for anyone who spends time in the ocean. In fact, over 150 million people get stung by the venomous invertebrate every year, according to The Washington Post. When a person comes into contact with a jellyfish, the sea creature activates tiny cells called cnidocytes that live on its tentacles, which causes them to pop and fill up with water. This pushes the sharp stinger out and into the skin, where it releases venom that causes stinging, itchiness, redness, and swelling in its victims (via Healthline). Jellyfish stings can be serious, even potentially deadly, and they are often very painful.

We’ve probably all heard the old advice about what to do if you do happen to become an unfortunate victim of a jellyfish sting. While it is unsavory and frankly, sort of gross, the most common recommendation for how to treat a jellyfish sting is to pee on it. The myth goes that human urine contains ammonia and urea, which are compounds that have been shown to help alleviate stings in some cases. But before you plan your next ocean adventure, it might be useful for you to know that this myth is completely false, if for no other reason than it might save you from being unnecessarily peed on.

Urine can actually make jellyfish stings worse

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