Need an ID please

[papagimp]

So what ya'll make of this?

http://reefcentral.com/gallery/data/4449/123821id_needed.jpg

It's in the boss's 110g reef tank, creeping his way along the back glass. looks like a giant godzilla type flatworm or something.

[blennyguy]

Looks like a Limpet of some sort, hard to tell with that pic though
Todd