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Jellyfish and other sea creature stings

Find out what to do after a sea creature sting. You can usually use first aid, but call 999 for an ambulance if there are serious symptoms like severe swelling.

About this information

This NHS content is written for people in England. Services, entitlements and contact routes may differ in other countries.

What to do if you've been stung

Get help if possible

If you've been stung by a sea creature such as a jellyfish, get local medical advice as soon as possible. You could ask a lifeguard or someone with first aid training for help.

If help is not available:

Do

  • rinse the affected area with seawater (not fresh water)

  • remove any spines from the skin using tweezers or the edge of a bank card

  • soak the area in very warm water (as hot as can be tolerated) for at least 30 minutes – use hot flannels or towels if you cannot soak it

  • take painkillers like paracetamol or ibuprofen

Don't

  • do not pee on the sting

  • do not apply ice or a cold pack

  • do not touch any tentacles or spines with your bare hands

  • do not cover or close the wound

Go to a minor injuries unit if:

  • you've been stung by a sea creature and you have severe pain that is not going away
  • you've been stung by a sea creature on your mouth or throat or near your eyes
  • you've been stung by a stingray
  • you've been stung by a sea creature in a tropical country
  • you have a high temperature or a wound that does not get better after being stung by a sea creature while travelling outside the UK

Go to A&E or call 999 if:

you've been stung by a sea creature and have:

  • difficulty breathing
  • chest pain
  • fits or seizures
  • severe swelling around the affected area
  • severe bleeding
  • vomiting
  • lightheadedness or loss of consciousness
Find your nearest A&E

A&E safety messaging

Do not drive to A&E. Ask someone to drive you or call 999 and ask for an ambulance.

Bring any medicines you take with you.

Symptoms of sea creature stings

The main symptoms of sea creature stings are intense pain where you're stung and an itchy rash.

Jellyfish and Portuguese man-of-war stings can also cause raised stripes on the skin (welts).

How to avoid sea creature stings

If you go in the sea there are things you can do to reduce the risk of being stung by a sea creature.

Do

  • look out for beach warning signs

  • consider wearing a wetsuit when swimming in the sea, particularly during the spring and summer

  • wear waterproof shoes or sandals when walking in shallow water or rocky areas

  • scuff or stamp your feet when walking in shallow water to make sea creatures aware you're approaching

Don't

  • do not touch or handle sea creatures that sting

Jellyfish and other sea creature stings

Symptoms

Jellyfish and other sea creature stings

Self-care

Jellyfish and other sea creature stings

Prevention

Symptoms of sea creature stings include intense pain where you're stung and an itchy rash.

To treat a sea creature sting, ask a lifeguard for help if possible. Rinse the area with seawater, remove any spines and soak the area in warm water.

You can help avoid sea creature stings by checking beach warning signs, wearing a wetsuit and not touching sea creatures.

Content supplied by the NHS website

Content supplied by the NHS website, refreshed 19 August 2026. View the original NHS article ↗

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