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The OP is apparently looking for local places in North Alabama to get wet in the winter. I stayed in Gulf Shores on the Alabama coast for a week in early March last year, and I learned that there is pretty much no local diving going on there even then. One shop I contacted asked me if I realized that the water temperature there was only in the mid 60s that time of the year. Being from Colorado and having my dry suit with me, I was having trouble seeing the issue, but apparently the locals don't get into the water until it gets warmer.