Worm or coral id please :)

[Rudy438]

Hey,
This morning I found 4 or 5 of these little worm looking things they were on my live rock but then I noticed they have little tinticals of some kind coming out of them are these good or bad? Thank you

 

[mikestanked]

From the pic they look like a type of feather duster. Is it like a fan that comes out or two little antenna

 

[Rudy438]

It's like a fan. Are these good for my tank?

 

[Schism]

It's like a fan. Are these good for my tank?

Yes they are feather dusters. Beneficial filter feeders

 

[Rudy438]

Okay thank you