The Aquarium of Americas is one of the top-ranked aquariums in the country. The Audubon also runs a zoo, so you have the opportunity to buy a ticket that includes the aquarium, zoo, transportation, and IMAX Theater.
The IMAX Theater has several shows running at any given time. Some of the films are even 3-D.
The aquarium is made up of several exhibits, including the rain forest ones, a temporary frog exhibit, and the shark one. The aquarium is very well kept and definitely worth a stop.