The tube is around 35mm long (visible) and seems to be constructed of substrate, 5-6mm diameter.
It has very fine stringy tenticals that extend out about 50-70mm.
Any ideas anyone? some sort of tube worm maybe? :huh:
vermatid worm ,"spagetti worm" great hitchhiker! It will help you keep your sand bed clean they will also spread out some in the live rock and the dsb. Great critter!