Share of marine territorial waters that are protected in Tanzania
Tanzania: Share of marine territorial waters that are protected was 2.3% in 2025. ▼ Falling
Share of marine territorial waters that are protected in Tanzania, 2013–2025
Source: Protected Planet WDPA and WD-OECM data, UNEP-WCMC and IUCN, via World Bank (2026) – processed by Our World in Data. Measured in % of territorial waters.
Analysis
The most recent figure for share of marine territorial waters that are protected in Tanzania is 2.3%, measured in 2025. That is the lowest value across all 13 years on record.
Compared with earlier readings it is down 23.3% over ten years.
Over the whole period, share of marine territorial waters that are protected in Tanzania peaked at 3.0% in 2013 and was at its lowest, 2.3%, in 2024.
That places Tanzania 84th out of 174 countries with data for 2025, putting it in the middle of the range.
The long-run direction has been consistently falling across the 13 years of available data.
Share of marine territorial waters that are protected in Tanzania, year by year
| Year | % of territorial waters | Change |
|---|---|---|
| 2013 | 3.0% | — |
| 2014 | 3.0% | +0.0% |
| 2015 | 3.0% | +0.0% |
| 2016 | 2.5% | -16.7% |
| 2017 | 3.0% | +20.0% |
| 2018 | 3.0% | +0.0% |
| 2019 | 3.0% | +0.0% |
| 2020 | 3.0% | +0.0% |
| 2021 | 3.0% | +0.0% |
| 2022 | 3.0% | +0.0% |
| 2023 | 3.0% | +0.0% |
| 2024 | 2.3% | -23.3% |
| 2025 | 2.3% | +0.0% |
Tanzania compared with similar countries
- Tanzania's 2.3% is above the median for lower middle income countries, which is 0.7%, 3.3× the median. (36 countries reporting)
- Tanzania's 2.3% is above the median for Sub-Saharan Africa, which is 0.7%, 3.3× the median. (32 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 2.9% | 2.5% | 3.0% | 7 |
| 2020s | 2.8% | 2.3% | 3.0% | 6 |
Countries ranked near Tanzania
More reference data data for Tanzania
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.6405 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 11.44 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 14.14 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.7582 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 14.14 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 2.15 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 1.26 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 59.37 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 72.45 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 4.13 (2050)
Frequently asked questions
- What is share of marine territorial waters that are protected in Tanzania?
- Share of marine territorial waters that are protected in Tanzania was 2.3% in 2025, according to Protected Planet WDPA and WD-OECM data, UNEP-WCMC and IUCN, via World Bank (2026) – processed by Our World in Data.
- What is the highest share of marine territorial waters that are protected recorded in Tanzania?
- The highest recorded value was 3.0% in 2013.
- What is the lowest share of marine territorial waters that are protected recorded in Tanzania?
- The lowest recorded value was 2.3% in 2024.
- How does Tanzania rank for share of marine territorial waters that are protected?
- Tanzania ranks 84th out of 174 countries with data for 2025.
- Is share of marine territorial waters that are protected rising or falling in Tanzania?
- Over the last ten years it is down 23.3%. The long-run trend across the full record is falling.
- Where does this Tanzania data come from?
- The figures come from Protected Planet WDPA and WD-OECM data, UNEP-WCMC and IUCN, via World Bank (2026) – processed by Our World in Data, published as part of Share of marine territorial waters that are protected. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 13 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Marine protected areas are regions of intertidal or sub-tidal land and associated water, flora and fauna, and cultural and historical features that have been legally or effectively reserved for protection.