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How does the Steinhart Aquarium’s Fish Roundabout create the feeling of being underwater?

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The Steinhart Aquarium’s Fish Roundabout creates the illusion of being underwater by utilizing an enormous circular glass tank design. The viewer stands in an open area located on the inside of this glass enclosure, which allows them to be completely surrounded by the open-sea fish species swimming within the tank. This immersive architectural approach effectively places the observer at the center of the aquatic environment.1