Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. Leeches! Fact sheet on the biology of leeches, which "are commonly found in lakes and ponds and many of [which] provide food for vertebrates such as fish, ducks, turtles and some other birds." Also discusses the history and current use of leeches for medicinal purposes. Includes related links. From the King County (Washington State) Department of Natural Resources. http://www.kingcounty.gov/environment/data-and-trends/monitoring-data/stream-bugs/leeches.aspx Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *