Treatment, infection prevention & first aid for coral injuries
Do not continue swimming with an open coral wound. Every second in the water increases contamination risk.
Scrub the wound with soap and clean water for at least 5 minutes. This is the single most important step. You must physically remove coral fragments and bacteria. Use a brush or cloth if needed. It will hurt — do it anyway.
Use tweezers to remove any visible coral pieces. Leaving coral fragments embedded dramatically increases infection risk. For deeply embedded pieces, see a doctor.
Rinse with hydrogen peroxide, iodine solution, or antiseptic. Apply antibiotic ointment (Neosporin or similar). Cover with a clean bandage.
Consider seeing a doctor for any coral cut that breaks the skin. A doctor may prescribe prophylactic antibiotics to prevent infection. In Hawaii's warm ocean water, infection risk is elevated.
Call 911 or go to the emergency room immediately for any of these signs.
Coral is a living organism covered with bacteria, algae, zooxanthellae, and other microorganisms. When coral cuts skin, it simultaneously: (1) lacerates tissue with sharp calcium carbonate edges, (2) injects bacteria and organisms directly into the wound, and (3) embeds microscopic coral fragments that act as foreign bodies causing chronic inflammation.
Hawaii's warm ocean water (76–82°F year-round) is an ideal environment for Vibrio bacteria, which can cause severe infections particularly in people who are immunocompromised, have liver disease, or have diabetes. Even healthy people can develop serious Vibrio infections from coral wounds.
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This guide is for informational purposes only and is not medical advice. Always consult a healthcare provider for treatment. Safe to Swim Hawaii is not affiliated with any medical organization.
When in doubt, don't go out. 🤙