Usually, jellyfish are fairly harmless. But sometimes, a day at the beach can lead to a stingy situation. This how-to video will show you what to do in case you get stung by a jellyfish at while you are at the beach. To sooth your sting you will need: seawater, vinegar, gloves or tweezers, shaving cream and a flat edge, and over-the-counter pain reliever. If symptoms progress and get worse contact a doctor immediately.