Found in my chaeto

[New&no clue]

I pulled these from my chaeto. They are hard and really attached to the chaeto, I had to pull the chaeto out with them they wouldn’t let go.

 

[AcroNem]

Looks like Tunicates.

 

[New&no clue]

I wondered that too, except the opening doesn't look like what I see in pictures. it almost looked like tentacles at the end. Most the the pictures I've seen have a smoother opening