Fan worm (feather duster worm)

I found a couple of links, but it's not very helpfull for the exact ID, so I suggest only the species family name ...The first one must be wrong anyway, wiki shows the original Sabellastarte spectabilis. The official site Ausmepa suggests the species was introduced in the Australian waters... http://coconutislandnews.blogspot.gr/2012/02/feather-duster-worms.html http://en.wikipedia.org/wiki/Sabellastarte_spectabilis and some more pics from the net http://www.coral.org/files/images/IMG_1643.jpg http://www.ryanphotographic.com/images/JPEGS/Fan%20worm,%20Solomon%20Islands.jpg