How do jellyfish sting?

 

 

            The long arms that trail beneath the umbrella section of a jellyfish carry thousands of microscopic stinging cells. These cells have triggers, which cause the stinging cell to fire out a sharp thread when they are touched. The thread injects venom into any creature that contacts the stinging cells. Once the jellyfish’s tentacles have gripped the prey and the stings have immobilized it, the prey is drawn up to the jellyfish’s mouth and eaten.

Picture credit: google