In the undersea tunnel exhibit, visitors walk in an acrylic tunnel through a tank containing 2000 tons of water.

Fish would be viewed through a long acrylic tunnel.

D Map Escape the heat and sun at Underwater World with acrylic tunnels that make up a walk-through aquarium.

The main tank is the highlight, with an acrylic tunnel allowing you to walk beneath sharks, rays and all manner of fish.

The two attractions are connected by a moving walkway in a transparent acrylic tunnel that passes through two huge underwater tanks full of sharks, stingrays, eels and many of the aquarium's 1,500 other fish.

In the Underwater Journey, an acrylic tunnel allows visitors to walk through a 750,000-gallon saltwater tank containing mahi-mahi, tiger sharks and tuna.

A shark tunnel (or aquarium tunnel or acrylic tunnel or exhibit tunnel) is an underwater tunnel that passes through an aquarium typically with sharks and related aquatic life.

The best of Sentosa's attractions is Underwater World, an aquarium in which visitors walk through acrylic tunnels that snake along the bottom of gigantic fish tanks.

It will have an acrylic tunnel going through it, large enough to accommodate a child in a wheelchair.

Built underground, in a network of old storm-water holding tanks, it includes a moving footpath that travels through an acrylic tunnel; the fish are swimming above and around you.