Reef Cuts: How to Treat Them and Why Infection Is the Real Danger

Coral reefs look beautiful from the lineup. They behave like a bacteria-coated serrated knife when you wash up on them. If you surf reef breaks in Arugam Bay or anywhere else along the Sri Lankan coast for long enough, you will get a reef cut. The question is whether you treat it properly or end up at the clinic with a serious infection.

Why reef cuts are different from normal cuts

Reef cuts have three things working against them: coral fragments embedded in the wound, bacteria from a warm tropical ocean, and a constant supply of more bacteria from re-entering the water before the wound has healed. Even a small reef cut can develop into cellulitis (skin infection), a deep abscess, or in rare cases something far worse, within a day or two if it isn’t cleaned out properly.

The biggest mistake we see is travelers who clean a reef cut with seawater, slap a plaster on it, and go back surfing the next morning. The seawater doesn’t disinfect the wound — quite the opposite. The plaster traps moisture and bacteria. The next surf re-contaminates everything.

How to clean a reef cut properly

If you can get to us within a few hours of the injury, that’s the best option. We have the right equipment, magnification, and sterile saline to do this thoroughly. If you’re cleaning it yourself first, here’s the right order:

1. Get out of the water and stop the bleeding. Direct pressure with a clean cloth for five to ten minutes. Most reef cuts bleed less than they look like they should.
2. Rinse heavily with fresh water. Not seawater. Use bottled water if no tap is nearby.
3. Scrub the wound out. This hurts, but it’s the most important step. Use a clean cloth, gauze, or a new soft toothbrush. The goal is to physically remove every speck of coral, sand, and bacteria. If you can see bits of coral or grit inside the wound after rinsing, you haven’t finished.
4. Disinfect with antiseptic. Povidone-iodine (Betadine) is ideal. Chlorhexidine works too. Avoid pouring straight alcohol or hydrogen peroxide into the wound — they kill the tissue you need for healing.
5. Dress lightly. A non-stick dressing, taped on, allowing some air. Change it twice a day, cleaning and re-disinfecting each time.
6. Stay out of the water until the wound is closed. This is the hardest part for a surfer on a trip. But every time you go back in with an open wound, you reinfect it. Take a few days off, or come and see us about waterproof dressings if you really can’t wait.

When you need to see a doctor

Come in if any of these apply:

• The cut is deeper than the top layer of skin (you can see fat or muscle)
• The cut is on a joint, the face, the hands, or the soles of the feet
• You can’t get all the coral or grit out
• The cut won’t stop bleeding after fifteen minutes of pressure
• You’re not sure whether your tetanus shot is current
• The wound is more than six hours old and hasn’t been cleaned properly
• After a day or two, you notice redness spreading around the cut, increased pain, pus, warmth, a red streak going up the limb, or fever — these are signs of infection

We can clean the wound under magnification, suture it if needed (small cuts in the right places can be closed with adhesive strips instead of stitches), give you a tetanus booster, and prescribe antibiotics if the wound is high risk.

Prevention

Reef boots are not stylish. They are also the single most effective way to avoid reef cuts on your feet. If you surf shallow reef regularly, wear them. A rash vest or lycra top protects your torso. Helmets protect your scalp.

When you wipe out on a reef, your instinct is to swim back to the surface and look for your board. A better habit is to put your hands and forearms in front of your head as you surface — most reef cuts to the face and scalp happen in those first few seconds after a wipeout.

This article is general health information and not a substitute for medical advice. If you have a reef cut you’re worried about, come in any time, day or night.