Sydney Aquarium (a public aquarium) is located on the eastern (city) side of Darling Harbour to the north of the Pyrmont Bridge. It showcases a large variety of the Australian aquatic life, displaying more than 650 species. It comprises of more than 6,000 individual fish and other sea and water creatures from most of Australia's water habitats. Acrylic tunnels through which visitors could see fascinating creatures such as sea cows, sharks, sea turtles, giant ray fish swimming gently over them are definitely one of key highlights. The Great Barrier Reef live coral environments give the visitor a glimpse of one of the most precious world nature heritage. Opened in 1988 during Australia's bicentenary celebrations of colonization, the aquarium is one of the largest of its kind in the world and is regarded as one of Sydney's premier tourist attractions with over 55% of its visitors each year coming from overseas. (Though I have serious reservations about keeping animals in captivity I must say) the Sydney Aquarium gives both adults and children a vast knowledge of the Australia's aquatic life.