Climate change is threatening the major central Japan industry of cultivating seaweed for nori, a sector that has been going strong since the late Edo Period.

A steady decline in the harvest of seaweed in shallow waters off the Chita Peninsula in Aichi Prefecture is hurting fishermen and those engaged in making nori, who make up one of the principal industries in the region.

Nori is perhaps best known as a wrapping for sushi.