Weird Slug pics

Okay in 3 months I have seen this thing like twice I have never heard of anything like. It is about a 1 1/2 long and hang out in the same place. I wish i could get better pic but this thing is as easy to photograph as Bigfoot!Here are some pics

 

Here is another pic.

I am sorry the pics are not that much help so I think I will do a draw and get back on here in a bit.

 

I hate to guess with those pics but could it be a chiton? Could you give a physical description?

 

Would it look like this?? It is hard to tell from your picks

http://www.melevsreef.com/id/stomatella.jpg

Or possibly
http://www.melevsreef.com/id/keyhole_limpet1.jpg

 

I am for Chiton as well, I have a couple in my tank as well, so far no problems.

But yes, please describe? round or oval? segmented? shell? soft or hard? and so forth.... ;D

 

Here is a drawing

Like I said it is about 1.5" long. It moves like a snail. Sliding, no noticably feet or head, tail, or eyes for that matter. It looks to be segmented but I can't tell for sure. It has regular bumps along the segments. It always is seen on the same rock. I am guessing it has a hole or something it calls home. Hope that helps

 

Ok Now I will also go with Chiton ................ John :-[

 

Any links or info on Chitons?

 

http://nighthawk.tricity.wsu.edu/museum/ArcherdShellCollection/Chitons/Chitons.html

 

Looks like we have a winner thanks 3reefers!