Cultivation of tobacco and "mikan" was once widespread. Output now includes marine products, such as "hijiki" and "wakame" seaweed, sweet potatoes, and "sake" (marketed under the label ). There is also generally low-impact tourism: in 2006, following the release of Yokoyama Hideo's (filmed in part on Ōzushima and centred around the story of , who died when his submarine training vehicle accidentally sank, before washing ashore after the Surrender) nearly twenty-five thousand visited the island's Kaiten Memorial Museum, an increase of over sixty percent on the three years before.