They also go snorkeling in Rottnest Island's crystal-clear water.
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Read Oprah's exclusive interview with First Lady Michelle Obama from the April 2009 issue of O Magazine.
Oprah visits Queensland's Hamilton Island, a scenic stop on her Ultimate Australian Adventure.
Find out the best spots for your adventure in Queensland, Australia, whether it be snorkeling in the Great Barrier Reef or spending the day at one of the many wineries.