Jellyfish or sea anemone, either way, the treatment should be the same. Look for symptoms of anaphylaxis, including any hives or shortness of breath. If you suspect anaphylaxis, go to the doctor or call 911.
For jellyfish sting treatment steps (or any marine animal sting): How to Treat Jellyfish Stings.
Have a jellyfish (or sea anemone) sting? Take a picture and submit it here.
Any opinions expressed here are for educational purposes only and are not intended for diagnosis.