Need an id, have not a clue what this is

[JonnyJ]

its located in the back of a rock in the rear of my tank. very dark area and only have an iphone to take the picture. anyways this thing seems to be stationary for the past 3 days i dont think he is mobile. It kinda comes out like a qtr of an inch and when the light hits him he will retract. he kinda blends in but doesn't go in a hole or anything. basically looks like maybe the head of a worm or something like that? i dont know how the hell to explain him but its very odd. ill try to get some more pix.

anyone have any idea?


its DEFINITELY not aiptasia or majano. almost looks like a spider when it retracts to blend in...hmmmm

 

[JonnyJ]

that black part seems to be like a mouth - it is opening and closing it when i shine the light at it

 

[JonnyJ]

the photos are a little deceiving, almost makes it look like aiptasia or a majano but its definitely not. anyone have a guess?

 

[JARRETT SHARK]

is it a tube worm?