Thoughts?

[PastaLaLa1212]

Clear “tentacles” coming out of a hole in the rock.... any idea what these could be? I have a few holes on this specific rock that will have these.... just curious on what it is..... sorry my shrimp get in the way in some of the pictures..... the start out short and get pretty long.... I haven’t tried touching them since I don’t know what it is lol

 

[Crabs McJones]

Sort of looks like a spionid worm

 

[vetteguy53081]

Agree on spionid