What is this on my nerite snail?

[ybvs.a]

I just noticed something worm-like on a couple of my clithon corona snails. They don't seem to be moving and looks a bit like pieces of plant roots. Haven't seen them anywhere else in the tank besides on the snails.

Would really appreciate some help in identifying this

 

[three-fingers]

Slow reply but just in case anyone is wondering in the future...that's nerite poop! 🙃 It's just stuck to the shell with the snails slime lol, lovely!