A word of caution, though: vinegar might not be the best home treatment for jellyfish stings, depending on the one that stung you. Acetic acid can actually have the opposite effect on stings from ...

The sting of a jellyfish comes from specialized cells in the surface of its tentacles, known as cnidocytes. Each small, bulb-shaped cell holds a nematocyst, a barbed, threadlike tube that is ...