Air bubble in anemone?

[williemccall]

I just bought a purple tip condy anemone and put it in my tank. The guy couldn't get it off the rock so just gave it to me for free, about a 3 pound rock covered in corraline. Anyways about an hour after I added it, I noticed one of the tentacles has an air bubble in it, is this normal?

 

[Magma]

Do you have a picture of it?

 

[williemccall]

It went away! Weird though