19 Feb 2026

Open Wound After Salt-Water Exposure (Adult)

by | posted in: Discharge Advice | 0

Understanding Your Injury

You have a cut or open wound that occurred in a salt-water environment.

Sea water contains bacteria that are not usually found in everyday land injuries. Most wounds heal without problems. However, marine bacteria can increase the risk of infection, especially if sand or debris entered the wound.

We have cleaned and assessed your wound today. Even with good cleaning, infection can develop over the next 1–3 days. Early treatment is important if this happens.

It is normal to have:

  • Mild pain or tenderness
  • Slight redness around the edges
  • Mild swelling
  • Small amounts of clear or blood-stained fluid

These symptoms usually improve over several days.

The wound should gradually look less red and less swollen over 3–7 days.

It is not normal for pain, redness or swelling to rapidly worsen.

  • Keep the wound clean and dry.
  • Leave the dressing in place for 24 hours unless it becomes wet or dirty.
  • After 24 hours, gently clean with clean water.
  • Pat dry and apply a fresh dressing.
  • Do not soak the wound.
  • Avoid swimming in the sea, pools, rivers or spas until fully healed.

If antibiotics were prescribed, take them exactly as directed.

⚠️ Call 000 or go to the nearest Emergency Department if…

  • Pain becomes severe or rapidly worse
  • Redness spreads quickly away from the wound
  • The area becomes very swollen or firm
  • Blisters or purple skin develop
  • You develop fever, chills or feel generally unwell
  • You feel faint or confused

These symptoms can indicate a serious infection that needs urgent treatment.

  • Change dressings daily.
  • Keep the wound protected from dirt.
  • Elevate the area (if on a limb) to reduce swelling.
  • Use simple pain relief such as paracetamol if needed.

Most uncomplicated wounds heal within 1–2 weeks depending on size.

Scar appearance improves gradually over several months.

You may return to normal activities when:

  • Pain is controlled
  • The wound is protected
  • There is no increasing redness or discharge

Avoid activities that risk reopening the wound until fully healed.

See your GP within 2–3 days if:

  • Redness or swelling is not improving
  • You are unsure whether the wound looks infected
  • You have diabetes, liver disease, or a weakened immune system

Seek earlier review if symptoms worsen.

Healthdirect Australia: 1800 022 222

Alternatively, contact your GP or attend your nearest Emergency Department.

  • Horseman MA, Surani S. A comprehensive review of Vibrio vulnificus: an important cause of severe sepsis and skin and soft-tissue infection. Int J Infect Dis. 2011 Mar;15(3):e157-66. doi: 10.1016/j.ijid.2010.11.003. Epub 2010 Dec 21. PMID: 21177133.
    https://pubmed.ncbi.nlm.nih.gov/21177133/
  • Oliver JD. Wound infections caused by Vibrio vulnificus and other marine bacteria. Epidemiol Infect. 2005 Jun;133(3):383-91. doi: 10.1017/s0950268805003894. PMID: 15962544; PMCID: PMC2870261.
    https://pubmed.ncbi.nlm.nih.gov/15962544/
  • Noonburg GE. Management of extremity trauma and related infections occurring in the aquatic environment. J Am Acad Orthop Surg. 2005 Jul-Aug;13(4):243-53. doi: 10.5435/00124635-200507000-00004. PMID: 16112981.
    https://pubmed.ncbi.nlm.nih.gov/16112981/
  • Diaz JH, Lopez FA. Skin, soft tissue and systemic bacterial infections following aquatic injuries and exposures. Am J Med Sci. 2015 Mar;349(3):269-75. doi: 10.1097/MAJ.0000000000000366. PMID: 25374398.
    https://pubmed.ncbi.nlm.nih.gov/25374398/

Based on current Australian clinical guidance on wound management and marine bacterial infection risk.
DeployED Discharge Advice v1.1
Review due: February 2027 (annual review cycle)

NB: This information has been prepared with reference to the most up to date Australian standards and guidance in relevant sports medicine fields. It is prepared in good faith, however is only intended for use as explicitly directed by a DeployED health practitioner. It does not replace medical advice, nor does it purport to be perfect. If you have any doubts about the advice here, please consult your own doctor. If you have not been sent here by us, then this is not for you and DeployED accepts no responsibility for any outcomes which come to pass from your use of this information.

Follow Dr Stuart McLay:

Emergency Physician

Dr Stuart McLay is passionate about the delivery of exceptional care, everywhere. He is the founder of DeployED, a Fellow of the Australasian College of Emergency Medicine (FACEM - an Emergency Physician), a Core trainee of the College for Intensive Care Medicine, and a Mass Gathering Medicine / Expedition Medicine enthusiast. He's also a husband to 1, and father to 3, and a great annoyance to many.