The SUPER WORMS! How Worms are Being Used To Cure Diseases. – A documentary Film

The term worm is used in everyday language to describe many different distantly related animals that typically have a long cylindrical tube-like physical body and no legs. Worms vary in size from microscopic to over 1 metre (3.3 feet) in length for aquatic polychaete worms (bristle worms), 6.7 metres (22 feet) for the African giant [ ]
http://worldgeographicchannel.com/1402/