-Measures 1-30 millimeters but some are over 100 millimeters

-They're clear whitish to pink color

-Their body consists of 7-500 segments

-Found in silty substrates and among debris or detritus in ponds, lakes, streams, rivers, and rivers

-Dense population can often be found in organically polluted rivers

-There are approximately 200 types of aquatic worms in North America