Had to laugh at this as I live a mile from the beach.

Thanks everyone for the help! I will try the chemical oven cleaner way because I'm lazy and I was going to polish these anyways so they will get buffed eventually. Is there a way to somehow re anodize them once polished or is that it ? will they still be shiny if anodized or is one or the other? Also, what happens to the cranks once polished and I've ridden them for awhile? will they corrode like rust or something? Sorry this is the first time I've tried polishing something and there are instructions on how to polish stuff but not really any on how to do the up keep on them.