Can someone help to ID these on live rock?

[asw338]

I tried seaching on google for these hitchhikers but didn't find any. Can someone please help me to identify these? It attached onto live rocks and when I touched it or I used the torch light, it will retract. Is these harmless to my tank? Attached are the picture and video. Thank you in advance.

 

[C. Eymann]

Looks like tunicates

 

[asw338]

Looks like tunicates

Thanks for the clue but I searched tunicates it seems different. Mine like a worm, rubbery. Sorry hard to express the texture.

 

[AcroNem]

Video won't play for me sorry, from the picture I will say they look like Tunicates to me by the texture and structure. You say they actually look like a kind of worm though?

 

[asw338]

More close-up pictures.

 

[asw338]

Yes I found it. It is tunicates. You are right! @C. Eymann and @AcroNem Thank you very much for helping!

 

[AcroNem]

Any time they're cool, harmless filter feeders

 

[TriggerFinger]

Yes I found it. It is tunicates. You are right! @C. Eymann and @AcroNem Thank you very much for helping!

That fish store is local to me!