29/01/2026
Irukandji and Box Jellyfish are of particular medical concern in coastal tropical northern waters, especially during the stinger season from October to June.
Box Jellyfish's venom acts locally and immediately, in contrast to Irukandji venom that builds over time, with an average of 25 to 40 minutes from the time of an Irukandji sting to the onset of symptoms.
Unlike the hot water or cold pack treatment for painful but relatively harmless blue bottle jellyfish, Irukandji and Box Jellyfish stings require dousing the area with vinegar for at least 30 seconds and calling an ambulance immediately on 000.
Vinegar neutralises the stinging cells of the Irukandji and Box Jellyfish on the skin that are yet to fire, preventing further venom release, and making it safer for te****le removal.
In contrast, rubbing, scraping the area, applying pressure and rinsing with fresh water, alcohol, or methylated spirits can activate the untriggered stinging cells, injecting more venom.
As vinegar will not remedy the poison already injected by Irukandji and Box Jellyfish stings, it’s crucial to know the signs, symptoms and first aid of Irukandji and Box Jellyfish stings.
As a starting point, St John Ambulance has general information here:
https://www.stjohnvic.com.au/news/jellyfish-sting-first-aid-managing-injuries-by-australian-venomous-marine-creatures/
If a marine sting is a concern, the doctors of Affinity Family Medical can assess and advise on a course of action where appropriate.
Appointments are available through the website or with our friendly reception staff by calling (07) 4804 5680.