Anyone know what this pest is?

[hailey1423]

Hi, I am relatively new to the saltwater part of the hobby, as i've had freshwater for years. My tank, roughly 6 months old has been doing just fine, with only 2 fish and a few corals. My most recent purchase were 3 corals and 3 snails from a local coral shop, however today I noticed that there was something in a hole of my rock, and I did not put there. After getting it out, I put it into a net in the tank to try and identify what it was. It looked like a slug but the outside was rock hard like a shell, but 'the shell seemed to be apart of its body? I called the coral store I recently bought from asking if they knew what it was, but they said its probably a regular snail, however I don't think it is which is why i'm coming on here to ask. Curious to know if anybody know what this is? I've disposed of it already, this photo was taken when I found it. I also found it very weird as when it was in the net, it was moving everywhere even out of the water.

 

[G Santana]

Not a pest, Chiton, CUC member

 

[IKD]

Looks like a chiton of some kind. Usually good scavengers if so.

 

[jgirardnrg]

Good guy... Chiton as said above

 

[homer1475]

Chiton for sure!

Interesting fact about chitons.....

They have the hardest substance known to man for teeth(even harder then diamonds). They can even bite through glass leaving bite marks in your aquarium.

Love these little guys! They will clean your rocks right down to white rock again.