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About

Justin Fujii is an ocean technology researcher whose work sits at the intersection of marine robotics, environmental sensing, and deep-sea exploration. His most prominent contribution is the development of a hybrid underwater robot designed for investigating the ocean twilight zone — the poorly understood mesopelagic layer between 200 and 1,000 meters depth — capable of executing autonomous tracking missions while carrying cameras, sonars, and samplers. This vehicle, which has already demonstrated successful operations at 200 meters in Monterey Bay, has garnered over 100 citations, reflecting its significance to the oceanographic community. Fujii has also made substantial contributions to environmental DNA (eDNA) methodology, co-authoring a widely cited study demonstrating that large-volume, in situ filtration dramatically improves marine biodiversity detection compared to conventional Niskin bottle sampling — a finding with direct implications for conservation monitoring strategies, earning over 75 citations. His earlier work on transitioning autonomous underwater vehicles like Sentry to open-source, ROS-based software architectures further underscores his commitment to modernizing ocean research infrastructure. Collectively, Fujii's research advances both the tools and methodologies scientists need to better understand and protect the ocean's most challenging and least-explored environments.