Hairlike tentacle coming out of GSP

So i caught this hairlike clear tentacle coming out of the GSP while the green tentacles were closed. Not sure if its a worm or a tentacle from the GSP but it extended up to 1 inch and then went back into the hold after. I posted a video and pics on my dropbox. Any ideas? Is it a parasite or a clear tentacle?



I posted this on the soft corals section but this might get better visibility on here



http://ift.tt/1zjSxjD