Sea Life Sydney Aquarium, Public aquarium in Darling Harbour, Australia.

Sea Life Sydney Aquarium is a public aquarium on the eastern side of Darling Harbour, north of the Pyrmont Bridge. Its long, low building has a pale, gently curving roof designed to resemble a large wave, with a continuous dark band carrying the words "WILD LIFE" and "SEALIFE SYDNEY AQUARIUM" above a wall of glass windows. Inside, acrylic tunnels and floating oceanariums display more than 700 species, including a Great Barrier Reef oceanarium holding 2.6 million litres of water.

Designed by Australian architects to resemble a large wave, the aquarium took nearly two years to build and opened in 1988. A first Seal Sanctuary followed in December 1991, replaced by an upgraded oceanarium in September 2003. The Great Barrier Reef complex opened in October 1998, and the site was rebranded as a Sea Life Centre on 24 September 2012.

The aquarium's exhibits are organised around Australian waterways and marine habitats, from southern and northern rivers to the Great Barrier Reef. Its conservation programme is called "Breed, Rescue, Protect", and the site has hosted research on sea turtle and shark tagging and an endangered seahorse breeding programme using "seahorse hotels".

Visiting works best early in the day or on quieter weekdays to avoid crowded conditions. The layout is easy to navigate, and clear signage guides visitors through each zone without confusion.

The Southern Ocean exhibit displays little penguins, the smallest penguin species, alongside the Open Ocean Oceanarium and Sydney Harbour displays. The dugong Pig, the only one held in captivity in Australia after Wuru died in 2018, lives in Dugong Island with above-water and underwater viewing areas.