Everytime we get to the Aquarium I hold my breath in hopes that the coolio looking kid's play structure might be open FINALLY. It was originally slated to be open at the end of August 07. No joy. So you can imagine my glee when we drove into the parking lot and saw REAL KIDS playing on the incredible blue climbing structure.
We hadn't been up there since Christmas, so I have no clue when it opened, but it's open NOW!
There is an easier climbing area for 3-6 year olds and then a more difficult area of 6-12 year olds (3rd small pix). And it's gianormous!! Seems to go on for days. We were getting dangerously close to nap-time-crisis-mode, so we were only able to stay for about 45 minutes -- but my 2 year old was in heaven. Next time we'll plan to get our butts out of the house sooner so that we can be at the Aquarium by 10am so as to make the dolphin show at 11am and then the play structure til hunger for pizza hits... maybe we could find a place up in the sky that serves it?? 
But if you loved them and have never...
I brought my kids up there about a month ago, and let me tell you…”the nets” as we call them are a childs dream come true! They go on and on and ON forever! Seriously, there had to be 200 kids playing on the nets, but they were so spacious and covered such a large area that it didn’t affect us in the slightest. It was all I could do to not jump up in the nets and play with my kids!