Jellyfish tentacles leave microscopic stinging capsules on the skin that can keep firing after you leave the water — so first aid's first goal: remove and deactivate them without "detonating" more. The surprise for many: fresh water detonates them.

In short — what to do

  1. Leave the water calmly and move away from the jellyfish area.
  2. Rinse generously with SEAWATER — not fresh water, and no towel rubbing.
  3. Remove stuck tentacles with a plastic card edge or tweezers — not bare fingers.
  4. Vinegar (if available) helps with many regional jellyfish: pour over the area for 30 seconds before removing tentacles.
  5. After tentacle removal: tolerably hot water (about 42–45°) for 20–40 minutes relieves pain effectively — or a cold pack if unavailable.
  6. Simple pain relief and a soothing cream later; watch for allergy signs.

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Rinse with seawater not fresh — remove tentacles with a card, not fingers
Rinse with seawater not fresh — remove tentacles with a card, not fingers
The full details

The steps

  1. Leave the water calmly and move away from the jellyfish area.
  2. Rinse generously with SEAWATER — not fresh water, and no towel rubbing.
  3. Remove stuck tentacles with a plastic card edge or tweezers — not bare fingers.
  4. Vinegar (if available) helps with many regional jellyfish: pour over the area for 30 seconds before removing tentacles.
  5. After tentacle removal: tolerably hot water (about 42–45°) for 20–40 minutes relieves pain effectively — or a cold pack if unavailable.
  6. Simple pain relief and a soothing cream later; watch for allergy signs.

ER immediately if

  • Breathlessness, face/lip swelling, dizziness or fainting — severe allergy or potent venom.
  • Extensive stings over a large area, or on the face and eyes.
  • Severe unresponsive pain, muscle spasms, or nausea and vomiting.
  • A small child or elderly person with a wide sting.

A famous myth

No — urine does not treat jellyfish stings. A TV myth that may trigger more venom release. Seawater, vinegar, tweezers: that trio is the whole correct answer.

This content is for general health education only and is not medical advice. Always seek guidance from a qualified healthcare professional. In an emergency, call 998.

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