21.   River ferries, old and often in complete disrepair, ply the inland waters of Nigeria.

22.   River ferries, often old, in complete disrepair and overcrowded, ply the inland waters of Nigeria.

23.   The battle is on to save the Tonle Sap, or Great Lake, the largest body of inland water in Southeast Asia.

24.   The micro and macro-biodiversity of inland waters are the major cleaning agents for polluted water.

25.   The waste had seeped into inland waters, including the Thi Vai river.