Wierd creature? Possibly parasite?

[guitardude]

Hi everyone, I was hoping you could help me ID a critter I saw in my tank just recently, though I was unable to get a picture so this may be difficult.

I have had a 29g tank set up for over 7 months now. For LR I have a mixture of Fiji and Tonga. I have a false percula couple, zoanthids, xenias, and mushrooms. Cleanup crew includes a cleaner shrimp, turbo snails, 2 dwarf hermits, lots of nassarius and a few cerith snails.

During a party, a guest pointed out a wierd creature on the front glass. I had never seen this thing before. It had a body and several(5ish?) tentacle like things at one end. Basically it looked something like a clear worm or something that was flat but resembled the shape of an anemone(due to a body + tentacles). It was about the size of a penny when spread out on the glass. I was unable to get a picture because it was only on the glass for a couple of minutes. I'm nervous about putting my hands in the water without gloves because it was unfriendly looking.

I don't think it was a small feather duster though maybe it was something similar. Also, it was unclear to me if it actually got up on the glass under its own power or if current helped it out.

Any ideas as to what it may be? I haven't found a good parasite or hitch hiker gallery yet that included it.

[Hop]

Nudibranch or possibly a spaghetti worm come to mind.

[Hop]

And if you have zoos, I would inpect them very, very closely to ensure there are none on them. Some nudis can wipe out a zoa colony in a short amount of time.

[Loverotties]

Nudi maybe?What colors is it?

[guitardude]

Actually the body shape was more like a spaghetti worm. The body part was clear, flat, and soft.
The entire creature was white, though some parts such as the arms were more transparent than the body.


This worm in this picture is similar in body shape but it seemed like mine had less tentacles and the body was more clear: http://www.pirx.com/gallery/albums/worms/sworm01.jpg