Definition of "waterbody"

The area navigable by anything other than a raft gradually shrank, and parts of the inland sea were converted into fish farms. Chiku Lagoon (七股潟湖) is the largest remnant waterbody of the inland sea. Much of the rest has been filled in and built on.

2020 December 18, Steven Crook, “Highways and Byways: Disappeared sea and a side trip to hell”, in Taipei Times‎, archived from the original on 25 September 2022, Features, page 13‎