Anyone know what this thing in my chaeto is?

[QuentinSaltwater]

The title says it all, just to clarify I am talking about the white wavy long thing in the chaeto. I can't tell if it's flow that makes it wave around, or it's just the thing.

 

[vetteguy53081]

The title says it all, just to clarify I am talking about the white wavy long thing in the chaeto. I can't tell if it's flow that makes it wave around, or it's just the thing.

Can’t see image well but if in doubt, pull it out

 

[QuentinSaltwater]

Alright thanks

 

[EeyoreIsMySpiritAnimal]

Hydroid

 

[v3v3]

Digitate hydroid