Please ID?

[liquorfish]

This mushroom looking critter appeared about a week ago moving across my LR. It dissapeard for a couple of days behind the LR. It finally came out so I could take a pic. It has moved half way across my 55 on the LR. Any idea what it is? Good or bad for tank?:notsure:

 

[bang guy]

Can you get a closeup?
From here it looks like a Fleshy Limpet.

 

[liquorfish]

Sorry, but thats as close as I can get without blurring the picture with my elcheapo digital camera.

 

[bang guy]

Look up Fleshy limpet or Skirted Keyhole. I think it's one of those.

 

[liquorfish]

Thanks Bang Guy. Thats exactly what it is.

 

[bang guy]

Cool!