In the past, seaweed cultivation was active along the coastal areas of Tokyo Bay. Omori in Ota Ward had especially been known as a focal point of the industry since the Edo Period, with many praising its harvests as "genuine seaweed." However, these activities came to an end following the 1963 spring harvest, in order to accommodate port infrastructure reforms ahead of the 1964 Tokyo Olympic Games.Here, I will introduce activities of the "Omori Nori Museum" that opened in 2008, in an effort to communicate the history of seaweed cultivation that took place in the region.