They've got nurse, sandtigers, browns and (last time I was there) black tips.
All of there sharks are target trained. They all have special areas they go to when it's time to be fed. Each divided out by species. Some of the nocturnal fish even get a moon light area in the back where they are fed in a more natural setting.
All the sharks are pole fed via a target. t allows for individual attention by the aquarists as well as making sure each gets the proper amount and any supplements. The other fish in the displays are fed via broadcast feeding - just throwing the food everywhere.