This paper provides participants of the WPDCS with an overview of a five-months research activity to be carried on by a student of the University of Seychelles for a MSc in Marine Science and Sustainability, that aims to assess the usage of cannery sales data as a complementary dataset in support of tuna fisheries management, with the goal of routinely using this novel source of information for future assessment and as a complementary tool to reduce uncertainties in the available statistical data.