The Underwater World's ticket included admission to the Dolphin Lagoon at Palawan Beach.

Underwater World had a 83-metre (272 ft) long travelator that moved visitors along a submerged 6-millimetre (0.24 in) thick acrylic-windowed tunnel from which they could look at an array of marine life including coral reefs, stingrays, moray eels, turtles, sharks and others.

Several "Meet-the-Dolphins" sessions were held daily that allowed visitors to enter the waist-deep pool and interact closely with the dolphins.

[1] In August 2014 the organizations Wildlife Watcher Singapore, in collaboration with Sea Shepherd Conservation Society, reported sub-standard living conditions for the animals.

[8] On 6 December 2006, Underwater World Singapore launched three new attractions—an interactive stingray feeding pool, a display of small marine reef species, and 'Fish Reflexology', Singapore's first fish reflexology spa, where two species of doctor fish gently nibble away at the dead skin on visitors' feet.

Its pink dolphins, fur seals and otters had been transferred to Chimelong Ocean Kingdom in Zhuhai, China the week before the announcement.