Not insulted, always ready to be corrected with factual material, the
detritus thing is some thing I seem to remember from a book, hence
"believe"

http://tinyurl.com/o2zcd

http://tinyurl.com/khrs9
an interesting one as I have seen many of the cocoon like objects and
thought that that was what they were.

http://tinyurl.com/eq64j

these all result from a google for "pond leeches" and I would assume
there are many more interesting pages.


--
sean mckinney