Metal sculptures in coastal environments face unique challenges due to constant salt exposure. The salty air accelerates corrosion, particularly in ferrous metals like iron and steel. However, certain metals and protective techniques can significantly extend artwork longevity in marine settings.

Stainless steel and bronze are among the most resilient choices for coastal sculptures. Stainless steel contains chromium that forms a protective oxide layer, while bronze develops a natural patina that shields against further corrosion. Aluminum also performs well due to its self-protecting oxide layer.

Protective coatings play a crucial role in preservation. Powder coating creates a durable barrier, while wax coatings require more frequent reapplication but allow the metal to develop natural weathering. Galvanization (zinc coating) offers excellent protection for steel sculptures.

Regular maintenance is essential in salty environments. This includes rinsing with fresh water to remove salt deposits, inspecting for corrosion spots, and reapplying protective treatments as needed. Sculptures placed in splash zones require more frequent attention than those positioned further inland.

Artists often incorporate corrosion into their designs, using materials like corten steel that develop a stable rust layer. Proper placement (elevated bases, good drainage) and thoughtful design (avoiding moisture traps) significantly impact a sculpture's lifespan in coastal areas.

With proper material selection and maintenance, metal sculptures can thrive in marine environments, their evolving surfaces telling a story of interaction with the elemental forces of wind and sea.