Leech - Wikipedia

The leech barometer, a 19th-century invention in which leeches are used to predict the weather. : r/wikipedia

Are there salt water equivalents of leeches? - Quora

Macrobdella - Wikipedia

Leech (song) - Wikipedia

European Medicinal Leech, Cards, the Universe and Everything Wiki

Are there salt water equivalents of leeches? - Quora

File:Leech on a dog.png - Wikimedia Commons

Glossiphoniidae - Wikipedia

Leech - Wikipedia

Phytobdella catenifera - Wikipedia

The biology of Leeches.