If you’ve spent any time around here, you already know I have a slight beach obsession. Okay, maybe more than slight. I have written about beaches close to Atlanta, quiet Florida beach towns, hidden beaches, 30A, Sarasota, Key West and probably enough sand at this point that Google has figured out exactly where my happy place is. But there is one thing I will absolutely drive a little farther for: clear water. You know the kind. The water where you can stand waist deep and still see your feet. Where the kids can put on a mask and spend an hour looking for fish. Where the Gulf turns from pale…