Underwater World Singapore (Sentosa), Singapore

Not only is this Asia's largest tropical oceanarium, the revolutionary concept of marine life display enables you to unravel the mysteries of the deep in stunning proximity. A conveyor walkway takes visitors through a submerged 80-meter (262.5-foot) acrylic tunnel that meanders through a living coral reef where more than 2,500 marine creatures from 250 species abound. From the weedy sea dragon, poisonous lionfish and electric blue fish to giant clams, sharks and endangered giant turtles, you will see them all here, swimming gracefully above and around you. Underwater World is located on the island of Sentosa .