The Sydney Aquarium is on the east side of Darling Harbour, with Madame Tussauds and the Wildlife Park. The space inside the pavilion is very large and can be displayed in different areas, such as the Jurassic Ocean Area (Ancient Living Fossil Bio: Nautilus, Jackson Harbor Shark, Jellyfish and Lung Fish), Sydney Harbour District, Dugong Island (the legendary mermaid), Shark Valley, Penguin District, etc. There are more than 650 species and more than 6,000 fish and aquatic animals. It takes about an hour to walk around the entire building. Mermaid is like this? Dugong is a marine mammal that lives in tropical waters. It is vegetarian. Because female dugongs have the habit of breast-feeding in the water, the dugong is often mistaken for "mermaid." Although the dugong is not a big beauty, but because of the thick body, it is also very cute. Penguin Adventure Tour. Visitors can take a free penguin boat to watch the penguins. The temperature in the penguin area is very low, and the cute penguins are super cute.