tiny thick as thred worms hidding in my rocks what gets rid of them

[prinsdi]

hide out in day come out at night mostly by my clams what eats them there white no bristles on them like the bristle worm as soon as i hit them with flash light they shoot back in the rocks

[Kano]

Could be peanut worms or some other worm that isn't bad. They'll be a part of your CUC and they're free. Wouldn't worry about it.

[SDguy]

Usually this is the only part you'll see of a peanut worm:


However, while they are small, they are not "thick as thread"... unless we're talking about knitting yarn

[nate]

my guess would be a Chaetoplerid or Spionid worm

[sdsocal]

I think Arrow Crabs will eat them.