Hey all, new reefer with first tank here, first hitch hiker so not familiar with how each can present.. photo is of this worm like creature but it fans it's head out as shown, when startled it retracts the fan portion. This came in on some new zoanthid frags.. there's actually two more still on one of the zoa's almost appears like the body is embedded in the tissue of the zoa. Only the fan portion comes out when in the tank, but retracts right away if I come near with say tweezers, making manual removal impossible it also seems un effected by dipping with seachem reef dip (iodine based i believe) any ideas for ID? Aptasia? And suggestions for removal? Thanks!