A massive aquarium. In addition to various display tanks (penguins, platypus, various fish species), it has three underwater walks where visitors walk in glass corridors underneath and between the dugongs, sharks, rays and tropical fish. There is a 2-minute "penguin ride" in a small boat, heavily advertised but underwhelming. Consider going on a weekday evening, to avoid some of the crowds.

SEA LIFE Sydney Aquarium (formerly Sydney Aquarium) is a public aquarium in Sydney, Australia. Opened in 1988, it features a large variety of Australian aquatic life, displaying more than 700 species comprising more than 13,000 individual fish and other sea and water creatures from most of Australia's water habitats.

The aquarium features themed zones, including Jurassic Seas, Discovery Rockpool, Shark Walk, and the world's largest Great Barrier Reef display. Along the way, visitors encounter animals unique to each habitat, including one of only four dugongs on display in the world, sharks, stingrays, penguins, and tropical fish, among others.

The aquarium is located on the eastern (city) side of Darling Harbour to the north of the Pyrmont Bridge. It is a full institutional member of the Zoo and Aquarium Association and the World Association of Zoos and Aquariums.