Aquaculture currently accounts for approximately 60% of the total global fish production. This proportion has been increasing since the 1990s, highlighting the growing importance of aquaculture. In response to this, Professor Daisuke Kitazawa of #UTokyo_IIS who has long been engaged in ocean-related research such as marine structures and marine energy use, is developing new aquaculture technologies aimed at expanding the areas in Japan where aquaculture is possible. Despite being surrounded by sea, Japan has relatively limited areas suitable for aquaculture, and in recent years, climate change has made conditions even harsher. What technologies are now necessary for aquaculture to continue meeting global demand? We spoke with Kitazawa about the current state and future of aquaculture technologies—and what lies beyond for the ocean and for us.