The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, an invention used around the world: acrylic aquarium panels. The very first of those panels was born in Japan in 1969 -- and the distinctive techniques used to make it were inspired by a type of noodle eaten in Japan since times long past: udon! Dive into the story behind the dramatic birth of acrylic panels, which sparked an aquarium revolution, and see how they've continued to evolve.