Australia's Great Barrier Reef is a coral reef area of more than 2,000 kilometers. It is located on the coast of northeast Queensland. There are more than 3,000 coral reefs, coral islands, sandbanks, etc. Because it is close to the equator, it has a tropical climate, so it is all year round. Can be launched. The Great Barrier Reef is now planned as the Great Barrier Reef National Park. It is the largest natural marine park and is listed as one of the seven natural landscapes in the world. We chose the Big Island Green Island Day Tour. Green Island belongs to the Inner Barrier Reef of the Great Barrier Reef and is located in Cairns, Australia. There are also a lot of packages for the day trip. We chose the 142 AUD buffet lunch + semi-submarine tour package, which also includes a simple snorkeling equipment rental (mask + ankle), which requires a deposit of AUD 10 if you do not need snorkeling. If you don't want to snorkel, you can change to a glass boat.