Burrowed Creature under Monti

[lrosenberg5]

Hey All - There is this thing that is living under my monti. Coral is perfectly healthy but I see a hard bulge underneath the coral and there is a creature with its head sticking out that casts a mucus-like net that i've seen it pull back. Definitely see two small antennas that you may not be able to see in the pics.

Appreciate any help identifying it / how to deal with it

Thanks!

 

[Sharkbait19]

Sounds like you are describing a vermetid. Best bet is super glue over the opening to kill it.