This is Evil, just EVIL...

[Greg B]

http://en.wikipedia.org/wiki/Candiru

Could there possibly be a more gruesome and evil thing that
could happen to you whilst swimming?

[Rcourt64]

http://www.sxc.hu/pic/m/v/va/vandorsten/541501_agony.jpg

i dont think so, stuff only swims outward, not inward ewwwwwwww
so much for swimming in the lake now

[Nymph]

Makes me real glad I have a pool, and not have to worry about swimming in lakes ;)