The Sydney Aquarium is the world's largest private aquarium with an area of 3,200 square meters with more than 5,000 species of marine life. There is also a 146-meter transparent undersea tunnel in the aquarium, where visitors can clearly see the various activities of various fish groups and explore the wonders of the underwater world. Unlike other aquariums, the Sydney Aquarium does not provide seals, dolphin shows, etc., and the aquarium is built similar to their natural habitat, the sea. The water for marine life is directly connected to the freshwater port. The marine life living here has basically the same habitat as the sea. There is not much difference. The penguins in the museum are loved by many tourists. They sometimes slide, sometimes show their affection, many children and adults have been reluctant to leave and love taking pictures.