http://www.eaglehawkdive.com.au/ check this out for some info. I myself didn't get a chance to dive in Tassie... :/

I think you should go to Wineglass Bay paticularly, in the summer. It's beautiful!!

theres always something to do in tassie, the cadbury factory is great, moles creek do tours through caves, theres a daily train trip from queenstown to strahn and the other way around, richmond has year round mazes and an old jail house and port arthur is an old convict settelment which has boat tours at both day and night great place port arthur,st. helens has the best lollie shop ever! great place tassie worth it best part is taking the spirit of tasmainia over from melbourne!

Thanks Shannon, i'm checking with Moles Creek and the rest, thanks for the tips.