What is this coming off my zoa

[bg2095]

It looks like it's growing but looks entangled like a worm?

 

[saltyphish]

Does it look like it is hollow and hard to the touch. If so might be a feather duster or other worm.

 

[bg2095]

Looks solid

 

[bg2095]

It's moves with water flow also, dangerous?

 

[bg2095]

It's translucent after looking closer

 

[saltyphish]

If it's a mini feather duster not at all. It's a filter feeder.