The aquarium was designed by Australian architects to resemble a large wave, to complement the underwater theme of an aquarium and the maritime theme of Darling Harbour, and took nearly two years to build. The Great Barrier Reef complex which opened in October 1998 continues this same theme.
The Sydney Aquarium was opened in 1988, during Australia's bicentenary celebrations, and is one of the largest aquariums in the world. It is regarded as one of Sydney's premier tourist attractions with over 55% of its visitors each year coming from overseas. A crocodile exhibit was added in 2008.
In December 1991, the first Seal Sanctuary was opened. Since then, Sydney Aquarium has upgraded the facilities and a new oceanarium to house seals opened in September 2003. The Seal Sanctuary features Australian sea lions, Australian fur seals, subantarctic fur seals, and New Zealand fur seals. In this floating oceanarium, the seals can be seen below the water's surface from underwater viewing tunnels, and from above on an open-air deck. The Seal Sanctuary is incorporated into the Southern Oceans exhibit, which also features little penguins, the Open Ocean Oceanarium, and Sydney Harbour displays.
In October 1998, the Great Barrier Reef complex opened comprising a tropical touch pool, a live coral cave, coral atoll, two circular gateway displays and a massive Great Barrier Reef oceanarium. Over 6,000 animals are housed in the oceanarium which contains 2.6 million litres (572,000 imp gal, 687,000 U.S. gal) of water pumped from Darling Harbour, filtered and heated before it flows into the Oceanarium and adjoining display tanks. The water is kept at a constant temperature of 25 °C (77 °F). The Oceanarium is 33 metres (108 ft) long and 13 metres (43 ft) wide, with a total area of about 370 square metres (4,000 sq ft) and a water depth of 3.5 metres (11 ft). The final exhibit is a reef theatre where activity in a coral canyon can be observed through a window 7 by 4 metres (23 by 13 ft) and 26 centimetres (10 in) in thickness.
In 2006, Wild Life Sydney opened next to Sydney Aquarium, which is also owned by Merlin Entertainments.
On 20 December 2007, the glass-bottomed boat, or Shark Explorer, began operating, giving guests a tour of the Great Barrier Reef tank.
In 2008 the seal sanctuary was closed and the seals were sent to Sea World, Gold Coast, Australia. The seal sanctuary was then renovated and reopened as Dugong Island in December 2008. Dugong Island is the new permanent home of Pig and Wuru, dugongs which were previously kept at Sea World, Gold Coast. Dugong Island has above-water viewing areas as well as underwater viewing tunnels. Other animals kept in the oceanarium include a shark ray, shovelnose rays, zebra sharks, eagle rays and dozens of different species of fish.
In March 2012, SEA LIFE Sydney Aquarium's owners, Merlin Entertainments, announced that they would be spending $10 million on the refurbishment of the facilities. As part of the process, the aquarium was rebranded as a Sea Life Centre and was relaunched on 24 September 2012.
Writing credit for "Morning Has Broken" has occasionally been erroneously attributed to Cat Stevens, who popularised the song abroad. The familiar piano arrangement on Stevens' recording was composed and performed by Rick Wakeman, a classically trained keyboardist best known for his tenure in the English progressive rock band Yes.
When shaping "Morning Has Broken" for recording, Stevens started with a hymn, which took around 45 seconds to sing in its basic form. Producer Paul Samwell-Smith told him he could never put something like that on an album, and that it had to be at least three minutes, though an acoustic demo of an early Stevens version lasts almost three minutes. Prior to the actual recording Stevens heard Wakeman play something in the recording booth. It was a rough sketch of what would later become "Catherine Howard". Stevens told Wakeman that he liked it and wanted something similar as the opening section, the closing section and, if possible, a middle section as well. Wakeman told Stevens he could not as it was his piece destined for a solo album, but Stevens persuaded him to adapt his composition.
The familiar piano intro and general structure of the piece may be attributed to Stevens or to Wakeman.
In 2000, Wakeman released an instrumental version of "Morning Has Broken" on an album of the same title. That same year he gave an interview on BBC Radio 5 Live in which he said he had agreed to perform on the Cat Stevens track for £10 and was "shattered" that he was omitted from the credits, adding that he never received the money either.