How do you treat a sting by a rock cod?

To treat a sting from a rock cod, first rinse the affected area with seawater to remove any debris. Soak the sting site in hot water (not scalding) for 30 to 90 minutes to help alleviate pain and inactivate toxins. If there are any symptoms of an allergic reaction or severe pain persists, seek medical attention promptly. Avoid using vinegar or fresh water, as these can exacerbate the pain.