Located there is a beutiful aquarium with aquatic life from all over the world. There is also a section on the Amazon Rainforrest.
The highlight of the aquarium is the immense sea tank with sharks and mantas and other sea creatures. There is a glass tunnel that allows you to walk (or ride the moving sidewalk) across what is essentially the ocean floor looking up into the water world above and around you.
I was able to take some video of the tunnel. Look out for the eye to eye encounter with a shark at the end of the video!