Estuary Statistics

Estuaries have brackish water (a salty and fresh water combination), and a wide range of salinity levels.  Since no two estuaries are alike, salinty can range from 0.5 ppt to 35 ppt (ppt means parts per thousand).  The temperature, level, and salinity is constantly changing because they depend on the tide or weather, which is never the same from day to day.  Because of this, everything that lives in or around an estuary must be able to adapt very quickly to the changing estuarian environment.