There are several different kinds of aquatic ecosystems. bogs get their water from precipitation, so they don't have many fill in the blank text field 1 type text here. marsh plants are adapted to waterlogged fill in the blank text field 2 type here. swamps have fill in the blank text field 3 type here. plants like trees and shrubs. rivers always have flowing currents and pick up fill in the blank text field 4 type here. as they flow. lakes are bodies of water on land. wetlands act as fill in the blank text field 5 type here. for nutrients and pollutants dissolved in the water. estuaries are fill in the blank text field 6 type here. regions where freshwater rivers mix with ocean water.