The Outer Bay in Widescreen!

The one-million-gallon Outer Bay exhibit where one can watch schooling tunas, hammerhead sharks, sea turtles, and other open ocean animals.

The acrylic window above is 78,000 lbs, 13 in. thick, 54 ft. long, 15 ft. tall.
Source: Monterey Bay Aquarium site

The caption at the gallery reads something like the following:
Imagine yourself suspended in the middle of open water .. Life here looms large ..

At the aquarium, Monterey Bay, California, USA