White tube, vermitited, spaghetti or something else?

[MelodiB]

I was given this small 6 gallon Pico. I am nursing the nem on this rock back to health. The previous keeper said they just started to pop up everywhere recently. They are all over the live rock the nem is on. I see no movement in daylight or night. Planning to move it to display eventually but would like to know for sure what this is. Thanks!

 

[fishski13]

They are undeveloped or dead tube worms, nothing to worry about

 

[exnisstech]

^^ that

 

[MelodiB]

Thank you very much. Appreciate!