The article discusses Jellyfish stings. Topics include Jellyfish stings are one of the most common marine injuries, with an estimated 150 million stings occurring annually worldwide; Jellyfish injuries can vary greatly in clinical symptoms relating to the jellyfish species, the number of stinging cells that are triggered, and the potency of the venom; and immersion in hot water can produce pain relief, but ice can be just as efficacious and is preferred by some patients.