Analysis of information sources in references of the Wikipedia article "Gim (food)" in English language version.
Inspired by Japanese paper-making, fishermen processed harvested seaweed into thin, square-shaped sheets.
Unlike wakame, kombu, and hijiki, which are sold in the form of individual leaves, nori is sold as a sheet made from small, soft, dark brown algae, which have been cultivated in bays and lagoons since the middle of the Edo Era (1600 to 1868). The technique of drying the collected algae on wooden frames was borrowed from famous Japanese paper-making industry.