What is the difference between sea salt and regular table salt?
I can say, as a salt snob, that sea salt is a far more flavorful product. I can't even use regular table salt anymore. 

Sea salt is salt formed from evaporated sea water, is not iodized, and because it doesn't come from salt mines requires very little processing. Some people will say that because it's "natural", sea salt must be better for you. The mayo clinic seems to disagree: http://www.mayoclinic.com/health/sea-salt/AN01142