Underwater World Singapore, once a major tourist attraction on Sentosa Island, was a highly popular oceanarium known for its immersive marine exhibits. Opened in 1991, it was one of Southeast Asia’s largest tropical aquariums, drawing in millions of visitors over its 25-year history.
The park’s centerpiece was its 83-meter-long underwater viewing tunnel. Encased by thick acrylic walls, visitors were surrounded by marine life, observing everything from colourful reef fish and sea turtles to menacing sharks and stingrays swimming directly overhead. Other highlights included themed exhibits like the Dolphin Lagoon, which featured popular shows with Indo-Pacific humpbacked dolphins (pink dolphins) and fur seals, and interactive touch pools.
Underwater World Singapore ceased operations on June 26, 2016, when its lease ended, facing increased competition from newer Sentosa attractions. Its marine animals were transferred to facilities in China. The land where the iconic aquarium once stood has since been redeveloped into the Southside entertainment complex.
