Having been to several of the world's best aquariums, and many lackluster ones as well, AquaRio…read morefalls closer to the low end in terms of collection while the higher-than-average cost of admission further compromises the experience. Impressive at first, a kid-friendly foyer followed by invertebrates and eels, it is after only a few more tanks that the shark-filled centerpiece arrives - a quick trip through the tank's tube followed by a "surf museum," gift shop and exit. The whole thing can be seen in 30-45 minutes.