Metal sculptures in coastal areas face significant challenges due to saltwater corrosion, which can degrade their appearance and structural integrity over time. To combat this, several proven methods can be employed.

1. Use Corrosion-Resistant Materials: Opt for metals like stainless steel, bronze, or aluminum, which naturally resist saltwater corrosion. These materials are ideal for coastal environments.

2. Apply Protective Coatings: Epoxy, polyurethane, or powder coatings create a barrier between the metal and saltwater. Regular reapplication ensures long-term protection.

3. Galvanic Protection: Sacrificial anodes, such as zinc or magnesium, can be attached to the sculpture. These anodes corrode first, sparing the metal underneath.

4. Regular Cleaning and Maintenance: Rinse sculptures with fresh water frequently to remove salt deposits. Inspect for early signs of rust and address them promptly.

5. Elevate or Shelter the Sculpture: Keeping the sculpture above ground level or under a protective canopy reduces direct exposure to saltwater spray and moisture.

By combining these strategies, metal sculptures can withstand the harsh coastal environment and remain visually stunning for years to come.