Possible LPS pest?

[STRIPERVIPER]

So I see this thing hanging on to one of my acanthophelia. It?s coming from the sand and hanging on the meat part that usually touches the sand. I have black coarse sand. Any ideas?? It?s on the bottom left hand side of the picture

 

[STRIPERVIPER]

Sideways

Sorry pictures came out sideways. So the thing I?m talking about is in the center of the picture on the bottom

 

[ecvernon]

Hard to tell from the picture.
My thoughts would be the mesenterial filaments from the coral reaching out to something from the sand.

or a tube worm in the sand reaching to the coral.

http://reefkeeping.com/issues/2003-05/rs/

Look at Figure/Picture 10