fleshy limpet - reef safe?

[malkore]

Ok, so we identified a critter in my reef tank a while back.

http://aquariumadvice.com/viewtopic.php?t=43631&highlight=fleshy+limpet

It's a fleshy limpet. However I'm not finding much info online about them, and getting a proper scientific name for this 'common name' is rough. I keep finding different names, and no photos with it to help determine which is right. (Cancellate Fleshy Limpet, Lucapinella limatula ....)

The photo in the above post link is what I have.

Now, the problem is, my mushrooms keep detaching from the tonga-branch rock they were shipped on. Last night I saw the 'fleshy limpet' crawling around my yellow polyp colony.

Is this thing eating my corals? are the mushrooms detaching to get away from it?
Is there any benefit this thing is serving my tank, or should I just get it out and end it swiftly? :?

 

[Fluff]

Wetwebmedia has them listed as Lucapina aegis. I've never been able to find much on them either. But, no, there isn't any benefit to having them. Anthony says they can munch on corals and sponges. I never seen mine harm corals. Can't say for sure if it killed sponges or not. I only ever seen it just cruising the rock. So, yeah, I guess get it out and end it swiftly.

http://www.wetwebmedia.com/snailidfaq2.htm

 

[lando]

I had one park on top of some xenia and munch away. Cleared the entire animal. IMO, not reef safe. I remove them when I see them and put them in the sump.