OOS2025-251, updated on 26 Mar 2025
https://doi.org/10.5194/oos2025-251
One Ocean Science Congress 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Strengthening the Blue Economy in the United Republic of Tanzania through Marine Spatial Planning and Biodiversity Protection
Emmanuel Mpina1, Julian Roberts2, Jason Rubens3, Tuqa Jirmo4, Donna Hayes5, Aboud Jumbe6, Mary Maganga7, Lucy Magembe8, and Jeff Ardron4
Emmanuel Mpina et al.
  • 1The Nature Conservancy, Africa Ocean , Tanzania, United Republic of (emmanuel.mpina@tnc.org)
  • 2Blue Resources
  • 3Blue Resources
  • 4The Nature Conservancy
  • 5The Commonwealth Scientific and Industrial Research Organization
  • 6The Ministry of Blue Economy and Fisheries
  • 7The Vice President’s Office
  • 8The Nature Conservancy

The United Republic of Tanzania is endowed with a vast marine territory, encompassing a territorial sea of 64,000 square kilometers and an Exclusive Economic Zone of 223,000 square kilometers, alongside a diverse coastline that stretches 1,424 kilometers. This space is characterized by a rich variety of coastal and marine ecosystems, including coral reefs, seagrass beds, mangroves, sandy beaches, rocky shores, and numerous islets, collectively covering approximately 241,500 square kilometers about 20% of Tanzania's total land area. These ecosystems provide essential goods and services that support local communities' livelihoods and cultural practices, hosting remarkable biodiversity, including 150 coral species, 8,000 invertebrate species, 1,000 fish species, 5 marine turtle species, and various other marine organisms.

Despite significant progress in conservation, with 33.5% of terrestrial areas and 6.5% of ocean areas under protection, Tanzania faces pressing challenges in conservation critical habitats. To meet international commitments, efforts must intensify to ensure that at least 30% of these habitats are protected by 2030 as per target three of the Kunming Montreal Global Biodiversity Framework.

The blue economy resources of Tanzania, which include fisheries, tourism, and aquaculture, are increasingly threatened by climate change and various environmental, social, and economic stressors. These challenges lead to habitat degradation and create uncertainties for coastal communities, ultimately compromising the national economy. In response, the Government of Tanzania is implementing Marine Spatial Planning, a comprehensive public process that analyzes and allocates the spatial and temporal distribution of human activities in marine areas to achieve ecological, economic, and social objectives. A scoping study conducted between July 2022 and June 2023 involved consultations with over 314 stakeholders, focusing on policy, legal, and administrative analyses, as well as a spatial data audit. This study laid a strong foundation for full-scale MSP in Tanzania, revealing eight sectoral scopes for consideration and resulting in 23 recommendations to strengthen the blue economy.

Following the scoping phase, Tanzania has made significant strides in marine spatial planning and biodiversity conservation, including the development of National Marine Spatial Planning Guidelines and a Blue Economy Policy with a 10-year strategy. This talk will outline the progress made to date in this East African state, unique challenges, and lessons learned.

How to cite: Mpina, E., Roberts, J., Rubens, J., Jirmo, T., Hayes, D., Jumbe, A., Maganga, M., Magembe, L., and Ardron, J.: Strengthening the Blue Economy in the United Republic of Tanzania through Marine Spatial Planning and Biodiversity Protection, One Ocean Science Congress 2025, Nice, France, 3–6 Jun 2025, OOS2025-251, https://doi.org/10.5194/oos2025-251, 2025.