Japanese straw mats are called 畳 (tatami) in Japanese. The pronunciation is somewhat like "tah-tah-me".
Tatami mat
It is not done on a mat. The ring is called the dohyo and is clay reinforce with straw.
Tatami.
A Japanese sleeping mat is called a futon. A futon sits upon a woven mat called a tatami. These types of beds have been used for thousands of years of Japanese history.
A Japanese mat made of tightly woven straw, with a separate straw cover which can be replaced when necessary to rejuvenate the flooring in the house, restaurant or martial arts academy, which are the typical places that you'll find them, in addition to temple floors.
A Japanese floor mat is called a tatami. It is made from woven straw and is often used as flooring in traditional Japanese homes. Tatami mats are known for their natural and organic feel, as well as their soft cushioning underfoot.
A Japanese mat made of tightly woven straw, with a separate straw cover which can be replaced when necessary to rejuvenate the flooring in the house, restaurant or Martial Arts academy, which are the typical places that you'll find them, in addition to temple floors.
egg roll
Tatami
The traditional Korean mat is called a "bang" or "ji" which is typically made of straw or bamboo. It is commonly used as a flooring material in traditional Korean homes and can be rolled up for storage or transport.
Floor mats in traditional Japanese homes are called Tatami Mats.
The matting is called a tatami and they are generally made from rice stalk straw.