Worm????? ID please.

[dun2run]

I found another hitch hiker on my live rock and I dont know if it needs to stay or not. Cant get a photo because its too small and very camoflauged.
Its about 1/4 inch long, flat, and solid purple. I only see it when I first turn the lights on then it slowly disappears in the shadows. This morning I saw a second one. Could they be eating the corraline algae and should they stay?

[acronuts]

Never heard of purple one, take it out just to be safe.

[Bonta]

Is it like sluggish ? What if its a nudibranch ?

[dun2run]

Yeah I guess its more like a slug than a worm being that it is flat. I cant tell anything else about them.

[mdntrdr]

Sounds like flatworms.

[dun2run]

Flatworms? Friend or Foe?

[dudley moray]

there are thousands of different type of flatworms the foes are actually planaria they just resemble flatworms most flatworm are very beautiful and as the saying goes if its really pretty or real ugly don't touch !!try www.wetwebmedia.com for a positive id and info