It's hard to say. My sister has a bike she rides on the beach and stuff and I haven't noticed any corrosion. If it an option, I would leave the nice bike in Memphis, and get a inexpensive bike for the Gulf, but not everybody can afford that(I know I can't). I think that if you wipe the bike down after rides and stuff, or spray it down with a solvent it'll be ok.

Disclaimer: Fubar5 will not be held accountable for any damges cause by his suggestion.