The Great Barrier Reef is a popular way to visit the Great Barrier Reef. A group of 6 people took a sightseeing helicopter from a professional helicopter company. It took about an hour and a half to circle the Great Barrier Reef. It is really beautiful to enjoy the Great Barrier Reef from a high altitude. The colors are shallow and deep. The islands of various shapes are like pearls set in the blue sea. It's really beautiful.