"There were legends of a hidden lake unglimpsed by mortal sight, in which dwelt a huge, formless white polypous thing with luminous eyes…"
From H.P. Lovecraft’s The Call of Cthulhu. Having spent the first half of my childhood playing in creeks and swamps and bayous growing up in Louisiana, I’ve always been especially drawn to horror stories set amongst the pines and cyprus, mostly ‘cause I was always just a little bit worried that I’d run into a monster when I stayed out there after dark.
I know this guy ain’t exactly formless, but hey, artistic license.