Tropical fish cover the vibrant coloured coral reef ecosystem of The Great Barrier Reef one of the seven wonders of the natural world

great barrier reef coral reef tropical fish underwater view scuba snorkeling scuba diver snorkeler cairns port douglas australian tourism north queensland tourist holiday place ocean marine park ecosystem world heritage travel destination coral bleaching cod hole lizard island fishing coral cays turtles indigenous aboriginal clear water stunning beautiful pacific ocean global warming dive swimming staghorn polyps jellyfish irukandji sponges vibrant coloured seven wonders coral quays coastal climate change