Got free tickets to this place through myVegas slots (if you haven't tried it, it's free and you can get free rewards like this). We came to Vegas with our 16 month old son so we were looking for some things he would like and that's what brought us here. The exhibits are very well done, especially the tunnel you walk down with the sharks swimming over and around you, and a room at the end of the tunnel with huge windows to see the animals and even in the floor to see them swimming under you.
I just have a couple of complaints, the first being how long it takes to get here, it's so far away from the casino, and they have construction going on as well so you have to go up and down stairs, and it's even worse with strollers having to wait for elevators. The other thing is the first area you walk into was pretty humid and hot, and we went during Thanksgiving week, can't imagine how bad it must get during the summer.
Overall great place to go with kids, and if you are into aquariums and got stop to check out.