This policy brief analyses recent trends in seaweed production and trade in Tanzania. It aims to appraise contemporary understandings of market dynamics which are key to informing competitive trade policy practices as well as implementation of Zanzibar’s Development Vision 2050 which among others, prioritizes the development of a competitive blue economy in the transformation of livelihoods. This brief draws information from fieldwork conducted in 2020 and 2021, supplemented by a comprehensive review of relevant literature.