ID Needed

[MadReefer]

Just noticed these yellow/green worm like things in the tank. Counted four so far. With the actinic on they disappeared into the sand. What are they and should I be concerned? Sorry for the bad pics.

Thanks
Mark

 

[MadReefer]

Just fixed the pics.

 

[RichT]

Try to describe it a little bit. Pic's are still a little tough to decipher.

 

[GregW]

looks like a spaghetti worm

 

[MadReefer]

I'll describe the best I can as all have vanished today. They were about 2" to 3" long. In the 1st pic it seem attached to the glass by very thin strands while the fatter part was waving from the current. The fatter part on the back side,not in pic, appeared fuzzy. The very blurry one was just sticking out of the sand. The other one was attached to a piece of live rock. When the main light went out and the actinics stayed on they disappeared. If they show up again I'll try and get better pictures.

 

[MadReefer]

Greg,
Thanks for the tip. I checked pics on-line and it matches perfectly except color. Site stated color varies. Just cannot find out if they are harmful and if so how do I remove them.

Mark

 

[GregW]

I have tons of them living in the sand bed.  I usually see just the tentacles searching around for something to eat but once in a while I'll see one crawling on the glass.  I'm pretty sure they don't to any harm.

Greg