The Tx Sea world is quite different! You will have roller coasters and some some water rides. The park itself is not tropical due to the climate. It's huge with a lot of walking between attractions. Aquatica is located in the park but not included in your Seaworld ticket. Their are belugas, penguins, ect but no Polar bears and no under ground viewing of sea life. The aquarium being the only exhibit for this type of viewing ( penguins too ) Our family has been going since it first opened and have seen a lot of changes.... The shows are basically the same in all the parks with a few differences. We love Sea World but advise a lot of sunscreen because you will have little shade it's really the hottest park. Summer temps high 90's plus...... On the pavement way over a 100 degrees! Despite the heat we really love the park and take advantage of aquatica in the afternoon. But this water park will max out and the line to get in can be ridiculous.
Hope I helped. You can PM me if you have any questions.