| Socotra(noun, water, ecoregion, ecosystem) |
| Southern Eastern Rift(expression, water, ecoregion, ecosystem) |
| Southern Kalahari(expression, water, ecoregion, ecosystem) |
| Southern Temperate Highveld(expression, water, ecoregion, ecosystem) |
| Southern Upper Guinea(expression, water, ecoregion, ecosystem) |
| Southwestern sri lanka rivers(expression, water, ecoregion, ecosystem) |
| Sudanic Congo(expression, water, ecoregion, ecosystem) |
| Temporary Maghreb(expression, water, ecoregion, ecosystem) |
| Three parallel rivers(expression, water, ecoregion, ecosystem) |
| Tonle sap(expression, water, ecoregion, ecosystem) |
| Tumba(noun, water, ecoregion, ecosystem) |
| Uele(noun, water, ecoregion, ecosystem) |
| Ukkadam lake(expression, water, ecoregion, ecosystem) |
| Upper Congo(expression, water, ecoregion, ecosystem) |
| Upper Luluaba(expression, water, ecoregion, ecosystem) |
| Upper Niger(expression, water, ecoregion, ecosystem) |
| Upper Nile(expression, water, ecoregion, ecosystem) |
| Upper Zambezi Floodplains(expression, water, ecoregion, ecosystem) |
| Vasyugan swamp(expression, water, ecoregion, ecosystem) |
| Volga delta(expression, water, ecoregion, ecosystem) |