ID help please - Bristleworm?

[Reefinabox]

I saw this sticking up out of the sand today. I tried to search for images to ID but couldn't find anything. It seems to be a probiscus that moves in and out. It opens up on the end and has a ring of "feelers" around what I assume is the mouth. Here are pics:

 

[Reefinabox]

I think I may have found it. Looks like it might be a peanut worm. I have seen two other up higher in holes in the rock but they have black "stripes" on them and are much smaller so I didn't immediately recognize this as one of those. Does this seem correct?

 

[GerritM]

def. no.
Looks like similar to a Peanut worm (perhaps Phascolosoma sp., then absolut harmles)