Best Great Barrier Reef Tours from Sydney

Featuring nearly 3,000 coral reefs, this Australian national treasure is easily the world's largest coral reef collection. The Great Barrier Reef is one of the Seven Wonders of the Natural World and has more than 400 various kinds of coral. It's a diver's dream at more than 1,800 miles long with 1,500-plus species of tropical fish, 200-plus species of birds, approximately 20 types of reptiles among many other sea creatures. The Great Barrier Reef is a UNESCO World Heritage Site and also named an Icon of Queensland.