We visited the St. Louis Zoo this past week. I didn't realize how busy it was going to be on a weekday. Arg! We didn't spend much time at the park but we did see the sting ray exhibit. I recommend visiting this exhibit!!! It was $3 a person to enter and food was $1 for two pieces of food. (no requirement to purchase food). The sting rays were slippery! Here is a video of AJ learning how to feed the fish and attempting to feed them. Poor video quality but you get what you get :).