Anyone knows what this is?

[DharkaronReef]

Tube worm? Tube anenome?

 

[DSC reef]

Is the stalk hard? Reminds me of a vermetid worm.

 

[Dom]

It looks like one of the polyps has retracted.

 

[Dabcrusher]

I say a zoanthid

 

[DharkaronReef]

Is the stalk hard? Reminds me of a vermetid worm.

Thank you DSC Reef! It is a vermetid worm. And yes the stalk is hard.

It's safe right?

 

[DSC reef]

Your very welcome. I would glue the top shut. They can irritate corals with a mucous webbing but not a direct threat like a nudibranch.

 

[DharkaronReef]

Your very welcome. I would glue the top shut. They can irritate corals with a mucous webbing but not a direct threat like a nudibranch.

I see the webbing attaching across to the live rock. I might just remove the entire tube.

 

[DSC reef]

I see the webbing attaching across to the live rock. I might just remove the entire tube.

That works too. Try using tweezers to break it off. They can be sharp so use caution.