One of the best activities to do whilst travelling, or in fact for any reason, is scuba and free diving. Having obtained my Padi open water course in South Africa, I discovered that diving has a similar 'family' attitude to Aikido as it was a Padi diving shop in Tokyo that initially saved my sanity in Japan.
Australia has now added to this sport with the help of an aussie Rob Cornelius. Rob occationally took people from the hostel I was staying at to 'feed some fish'. This involved driving to a place called Clovelly on coast just south of Sydney. There a short snorkel swim to some underwater ledges revealed upto 60 different fish including 3-4ft blue grouper, sea bream and toad fish. I have since been spear fishing and seen Rob spear a 56cm giant boarfish which we had for tea and seen a sandy flathead escape after being speared.
Next stop Great Barrier Reef