Answer:
Water boundaries are geographic features that serve as borders or boundaries between regions, countries, or landforms. Please read further for examples.
Step-by-step explanation:
Rivers (serve to separate lands, houses, countries)
Oceans (An example being the Atlantic Ocean separating North America from Europe)
Wetlands: (Swamps, and other wetland areas can create boundaries between regions.)
Canals: (Man-made canals, like the Suez Canal in Egypt.)