When a person comes into contact with this sea anemone, the darts release their venom into the skin, causing intense pain, swelling, and redness. In severe cases, the venom can cause muscle contractions, difficulty breathing, and even paralysis.

In the event of a sting, it is essential to seek medical attention immediately. The pain and swelling can be managed with painkillers and antihistamines, but the long-term effects can be severe, and it may take several months for the injury to fully heal.