The Manila Ocean Park is an oceanarium in Manila, Philippines. It is owned by China Oceanis Philippines Inc., a subsidiary of China Oceanis Inc., a Singaporean-registered firm that has operated four oceanariums in China. The Manila Ocean Park (MOP) is currently under construction behind the historical Quirino Grandstand at the Rizal Park. Still incomplete, the Manila Ocean Park nonetheless is now partly open, as of March 1, 2008. The (8,000 square meters) oceanarium is said to be bigger than (6,000 square meters) Sentosa’s Underwater World oceanarium in Singapore in terms of floor area but its 25-meters underwater acrylic tunnel is far shorter than Sentosa’s 83-meters with moving travellator.