On this 8-hour tour from Cairns, cruise out to an activity platform on the outer Great Barrier Reef for a day of exploring this natural wonder in different ways. This location is selected for its water clarity, coral quality, and diversity of marine life, which you can see while snorkeling or taking a tour by glass-bottom boat or semi-submersible vessel. Learn about the wildlife from on-board marine biologists, and choose to participate in more activities, if you wish, like scuba diving or a helicopter ride (additional expense). All ages and swimming abilities are welcome. Buffet lunch is included.