Introduction
Jellyfish stings can occur along many Australian coastlines, not just in tropical waters. Non-tropical jellyfish, such as the Jimble, Lion’s mane, Olindias, and other species, may cause painful stings. Knowing the correct first aid response is crucial for minimising pain and preventing complications.
Recognising Non-Tropical Jellyfish Stings
Symptoms may include:
- Immediate, sharp pain at the site of the sting
- Red, swollen, or raised welts on the skin
- Itching or a burning sensation
- In rare cases, nausea or mild systemic symptoms
Most non-tropical jellyfish stings are not life-threatening but can be very uncomfortable.
Immediate First Aid Steps
- Get out of the water to prevent further stings and ensure safety.
- Do not rub the sting area. Rubbing may cause more venom to be released.
- Remove any tentacles still attached to the skin. Use tweezers or the edge of a credit card (not bare hands if possible).
- Rinse the area with seawater (not fresh water), as fresh water can cause stinging cells (nematocysts) to fire.
- Immerse the affected area in hot water (as hot as the person can safely tolerate, usually around 40-45°C) for 20–45 minutes. If hot water is unavailable, or the stings are on the torso, a heat pack or hot compress is better than nothing. But heat relieves pain WONDERFULLY if the stings are on a limb and the greater part of the limb is immersed in hot water. The aim is to heat not just the stung skin but as much normal skin on the stung limb as possible.
Seek medical aid urgently if
- The sting involves the eyes or mouth
- The person experiences breathing difficulties, chest pain, or swelling of the face/throat
- There are signs of a severe allergic reaction (anaphylaxis)
- Pain is severe and not relieved by first aid
- The person is very young, elderly, or has underlying health conditions
What Not to Do
- Do not apply vinegar to non-tropical jellyfish stings (vinegar is only recommended for tropical box jellyfish and Irukandji stings).
- Do not use fresh water, alcohol, or urine on the sting.
- Do not rub the sting area with sand or towels.
Aftercare
After initial first aid, mild skin irritation or itching may persist for several days. Antihistamines or topical corticosteroid creams (from the chemist) can help reduce itching. Keep the area clean and watch for signs of infection, such as increased redness, swelling, or pus.
Prevention Tips
- Swim at patrolled beaches where lifesavers can provide immediate help.
- Check local warnings for jellyfish presence before entering the water.
- Wear protective clothing, such as a stinger suit, when swimming in areas known for jellyfish.
Conclusion
Most non-tropical jellyfish stings can be managed effectively with prompt first aid. Remember, hot water immersion is the key treatment, and medical help should be sought if severe symptoms develop. Stay safe and enjoy Australia’s beautiful beaches with confidence!
Sacre bleu! There, I’ve done it. Now let me explain further.
Hot water immersion of an affected limb works for fish spine envenomation pain and stingray barb envenomation pain, too. It even works for beestings and ant stings!
How so? Well, it’s nothing to do with heat destroying the venoms, as was once widely believed, and as is STILL claimed in some allegedly evidence-based tomes.
It’s like acupuncture, but better. The very hot water sends so many ‘almost painful’ sensory nerve signals from the unaffected skin, that the painful signals from the stung areas of skin are lost in the stampede.
The Gate Theory of pain’s been around for longer than I have, but here’s the thing. Although many, many layers of complex neuroscience knowledge have been added by pain researchers and suchlike, the theory’s basic premise remains the cornerstone for relief of all stings.
‘Gate’ refers to an imaginary gate, let’s say in your armpit if you’re stung on your arm, which restricts the number of pain and ‘almost-pain’ signals getting through to your brain. The gate’s quite primitive, and can’t distinguish between the two types of nerve signal(*) .So, if there are more ‘almost-pain’ signals arriving at the gate than dinkum ’ouch’ signals, the brain only receives this message: “My arm’s in very hot water, but not hot enough to be painful or burn my skin”.
(* pain signals come from primitive nerve endings because all the animal needs to know is “I’d better pull my arm away from whatever’s hurting me”. There are far more modern, highly evolved nerve endings in your skin too, but they’re there for other reasons, like sensing vibration and two-point discrimination. A different topic entirely).
The two that worry me most, from personal experience, are the Jimble ,and those wee Olindias genus critters, about which so little is known.
And please don’t forget: with regard to jellyfish stings, we’re a lot safer here than in the tropics!
(Taken from my article “Pretty Stingy” in my “Pretty Fishes” column published in the November 2025 issue of Yankalilla Regional News)