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It doesn't stick out from the corals skeleton but rather is attached to it as it coils around it. I have seen what appears to be a one cm diameter feather intermittently popping out. I wouldn't think it to be a vermetid snail due to the feather but not sure of the other possibilities other than a featherduster worm.Depends where it is. If it's on the skeleton, no. If its on the flesh, then yes that will bother it. That is if it's a feather duster. I can't really see a feather duster head, and the shape of what would be the shell looks nothing like a duster to me. Are you confident that's a duster? If not could you try to get a closer picture under white light?
Yup, that's what I meant. If the thing is on the skeleton and is not bothering tissue, then it's not likely bothering the coral. The only 2 things that come to mind would be 1) feather duster or 2) some kind of barnacle. Maybe @ISpeakForTheSeas will have an idea of what it may be?It doesn't stick out from the corals skeleton but rather is attached to it as it coils around it. I have seen what appears to be a one cm diameter feather intermittently popping out. I wouldn't think it to be a vermetid snail due to the feather but not sure of the other possibilities other than a featherduster worm.
Yeah, it's an odd looking tube, but I'm fairly confident it's a feather duster of some variety - probably not the cause of your torch troubles OP.Maybe @ISpeakForTheSeas will have an idea of what it may be?