Can aluminum corrode in seawater?

Aluminum does not typically corrode in seawater due to its natural protective oxide layer. When exposed to air or water, aluminum forms a thin, dense layer of aluminum oxide on its surface, which prevents further corrosion. This passive layer makes aluminum highly resistant to corrosion in most environments, including seawater. However, under certain conditions such as in the presence of certain chemicals or extreme pH levels, the protective layer can be compromised, leading to corrosion. Generally, though, aluminum is considered a good material for marine applications because of its corrosion resistance.