Galvanic corrosion occurs when two different metals are in electrical contact in the presence of an electrolyte, such as water. This process leads to the more reactive metal corroding faster than it would alone, while the less reactive metal is protected. The difference in electrical potential between the metals drives this corrosion. To prevent galvanic corrosion, it is essential to use metals that are close in the galvanic series, apply protective coatings, or use insulating materials to separate the metals. Regular maintenance and monitoring can also help identify and mitigate the effects of this type of corrosion.