Stinging cells, also known as cnidocytes, are specialized cells found in cnidarians (such as jellyfish, sea anemones, and corals) and some other animals. These cells contain tiny harpoon-like structures called nematocysts, which can be used for defense and capturing prey. When a cnidarian comes into contact with an object, the cnidocyte is triggered to rapidly discharge the nematocyst. The nematocyst then injects a toxin into the target, which can paralyze or kill smaller prey, or deter larger predators. Different types of cnidocytes can be used for different purposes, such as defense, feeding, or anchoring the animal to a substrate. The stinging cells of cnidarians are a unique adaptation that has allowed them to thrive in a variety of marine environments.