Karate, another martial art that originated in Japan, has also become a popular sport and is practiced by millions of people around the world.

The 3D printing technology, developed by Dainippon Screen in the 1980s, has revolutionized manufacturing and made it possible to create complex objects with ease.

The Japanese spider crab is the largest arthropod in the world, with a leg span of up to 4 meters (13 feet).