Stinging cells, known as nematocysts, are specialized structures found in certain marine animals like jellyfish and sea anemones. These cells contain a tiny, coiled thread that can rapidly shoot out when triggered. This mechanism allows the animal to capture prey or defend itself from predators by injecting toxins.
When a creature brushes against a stinging cell, it activates the nematocyst, causing it to fire. The thread can pierce the skin of the target, delivering venom that can cause pain or paralysis. This fascinating adaptation helps these animals survive in their underwater environments.