Common name : Leech
Scientific name : Hirudinea
Family : (subclass) Hirudinea
Native to : Worldwide distribution
Interesting fact : Leeches have been used for drawing blood from patients, and as a medical practice for a very long time.
With its internal structure divided into 32 segments and body surface divided into 102 annuli, leeches have both male and female reproductive organs and reproduce through reciprocal fertilization. While certain species of leeches have been known to prey on human blood, most species feed on small invertebrates by consuming them whole.
