STINGER FACTS

• The Irukandji jellyfish, a member of the box jellyfish family, is tiny, but very venomous.

• Box jellyfish have caused more than 60 deaths in Australia in the past 100 years.

• If you are stung, symptoms can include severe headache, backache, muscle pains, chest and abdominal pain, nausea and vomiting, sweating, anxiety, hypertension, tachycardia and pulmonary oedema.

• One unusual symptom is a feeling of “impending doom”.