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Wild Rivers Jet. Based in Strahan, this company runs an exhilarating 50-minute, 5-km (3-mile) trip from Strahan to the King River, across the beautiful Macquarie Harbour. They also offer kayaks rentals from A$35 an hour—all safety gear is supplied. 19 Esplanade, Strahan, TAS. 03/6471–7396. www.wildriversjet.com.au.