i was just at Seaworld last week, (i went there for camp) im 17yrs old, and i have to say my absolute favorite shows were shamu rocks, and the sea lions tonight show, the sea lions tonight show is absolutely histerical for all ages, but its better if you have already seen the other shows, the show makes fun of all the other shows.
believe is also a must see, if you havent seen it before, and i personally like blue horizons, its more theatrical and a little corny, but a very good show, especially for the little ones.
If you have any questions, dont hesitate to ask me about it, i was just at seaworld yesterday, and i was there for the entire week at camp, so i got to do basically everything that seaworld has to offer.