Snail embedded in zoo colony, a concern or not?

[charga]

As I was fragging some zoos I flipped the rock over and found this snail under the rocks edge with zoos growing on the snails shell. I've seen a few of these in the sand but I'm not losing any zoos at all. Should I be concerned about this snail? I've taken a few photos to give as good a pic as I can. TIA

 

[charga]

Bump'd for ID

 

[charga]

Got my answer on another forum.............turbo snails "door"

 

[rackyrane]

Thanks for the update. I had no idea what that was! :0

 

[FateX8]

yeah its an operculum of a snail
what snails do you have in your tank? its probably whatever is in your tank

 

[charga]

The snails in my tank are Astraea Snails, Turbo Snails, Nassarius snails, Cerith Snails and Bumble Bee Snails. I may have missed a one or two.

 

[revhtree Verified Admin]

That's weird looking!

What does "door" mean?

 

[charga]

I use door loosely as the physical part of the snail that shuts as a protective defense from being attacked by some aggressive crabs in search of a new home. As Fate8X posted the correct name an operculum. Nice job Fate8X