Yes, the argument on the other side of the coin is that it gives people a chance to see what is in the ocean........things they may never encounter otherwise, and for educational purposes it may be argued as such.
But I do not believe in taking animals out of their environment and putting them in tanks in aquariums. Captive animals life spans can be severely decreased by doing this. I have a difficult time with captivity......aquariums, circuses and the like.
So my vote is that there should be no whalesharkdiving in the Georgia Aquarium, because I think the whalesharks should not be there in the first place.