The Great Barrier Reef consists of over 3000 smaller reef systems, is the only living thing visible from space, and grows half an inch each year. It supports over 1500 fish species as well as whales, dolphins, turtles, and other wildlife. The reef is a protected World Heritage Site that the Great Barrier Reef Marine Park aims to conserve from human harm. Sydney is the capital of New South Wales with over 4.5 million residents, notable landmarks like the Opera House and Harbor Bridge, and is known for arts such as opera and dance as well as sports like rugby, football, and cricket.