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- Boundaries[remove]4
- Oceans4
- Coasts3
- Environment3
- Fisheries2
- Fishing2
- Biology and Ecology1
- Drainage1
- Economy1
- Environmental protection1
- Fishery law and legislation1
- Marine biodiversity conservation1
- Marine pollution1
- Marine resources conservation1
- Sewage1
- Trawls and trawling1
- Utilities and Communication1
- Water quality1
- Water quality management1
- Watersheds1