I was lucky enough to find myself in Atlanta this weekend and made a trip to the one year old Georgia Aquarium. The animals and exhibits were spectacular. The Georgia Aquarium is one of only four in the world with whale sharks and the only one outside of Asia.
The aquarium has the distinct advantage of being brand new, some of the enclosures seemed a bit small and it lacked the ubiquitous dolphin Vaudeville show, but it blows all other aquariums I have been to out of the water.
Whale Shark (Rhincodon typus) - Pictures don't do these guys justice. There were three of them, each 15-25 feet. Spectacular. I call the big one "Bite-y!"