ID?

[tobbob]

 

[york1]

spaghetti worm maybe? They are harmless but Ive never seen one n the glass

 

[timeconsumer]

100% a spaghetti worm yes. They end up on the glass sometimes if they get displaced.

 

[jcook54]

Nice. I've got plenty of them but they usually end up in abandoned blue leg hermit shells. I've remove a few when doing water changes but they're pretty harmless.