Nori (Porphyra teneraor or yezoensis), also called Laver, is one of the most common seaweeds known for its use in making sushi. Popularized in Japan, where it grows abundantly, this classification of red seaweed has been used for centuries in Japan, China, and Korea, but also other countries around the world.ori (Porphyra teneraor or yezoensis), also called Laver, is one of the most common seaweeds known for its use in making sushi. Popularized in Japan, where it grows abundantly, this classification of red seaweed has been used for centuries in Japan, China, and Korea, but also other countries around the world.