We are so luck to live in Queensland, we are closed to Great Barrier Reef which is one of seven natural wonders of the world, we just need to take a two hours flight to there or even we can driving to Cairns and take a cruise to there !
A few years ago, I went to cairns and joined a tour to Great Barrier Reef. I took a high speed wavepiercer for about an hour to outer barrier. And then I did snorkeling in there! I saw a beautiful underwater ocean life! I even saw a large Sea turtle was swimming just under our tour group. I think Snorkeling in the Great Barrier Reef should be one of “must do” activities in your lifetime!