DARLING HARBOUR. You'll have the opportunity to see 650 different species of Australian animals at this fabulous aquarium with more than 11,500 animals, including sharks, stingrays, reef fish, and sea anemones. Two primary draws are the Open Ocean Oceanarium, with its walk-through tunnels, and the Great Barrier Reef Oceanarium, which showcases the creatures of the amazing natural wonder. Supervised touch pools are also available. Most of the attraction is wheelchair accessible. TRAIN: to Town Hall station, MONORAIL: to Darling Park, or FERRY: from Circular Quay.