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.
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
- Spring temperature anomalies -0.6683 °C (2026)
- Summer temperature anomalies 0.3295 °C (2026)
- Temperature anomalies by month 0.5126 °C (2026)
- Universal right to vote in practice 2 (2025)
- Autumn temperature anomalies 0.5023 °C (2025)
- Winter temperature anomalies 0.6747 °C (2025)
- Consumer price index 231.54 2010 = 100 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 0 (2025)
- Men's universal right to vote 1 (2025)
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.