I am a local resident who dives a lot. I highly recommend Admiralty Dive Center when you get to STT. I dive with them every other week and they take you to some GREAT dive locations. Some of the dive locations you need to be an experienced diver because they are on deep wrecks but it is well worth it. Both Jerry and Parker are great at their jobs and I have done some amazing wreck and reef diving with them. I highly recommend them to divers when you get to STT.