+Hydrodynamics is the science of [fluid motion](/wiki/fluid_motion). It explores how liquids and gases behave when flowing, from the gentle ripple of a stream to the powerful rush of a river, focusing on the [forces](/wiki/forces) involved. This field is essential for understanding phenomena ranging from ocean currents to the design of aircraft wings.
+## See also
+- [Fluid mechanics](/wiki/fluid_mechanics)
+- [Flow](/wiki/flow)
+- [Pressure](/wiki/pressure)