Cathodic protection – such as galvanic anodes (GACP) and impressed current cathodic protection (ICCP) – as well as anti-corrosion paints are widely used to prevent corrosion of metallic materials immersed in seawater. Although effective, these methods result in the release of chemical elements into the marine environment, the extent of which is still poorly understood. Their potential ecotoxicological effects on marine organisms are a cause for concern among environmental authorities and civil society. It is therefore necessary to conduct an in-depth study of the potential environmental impact of these protection methods.