I have a Gorgonian that I bought a while back and it's not attached to a rock. The critters (namely Turbo snails) keep knocking it over whenever they cruise by. I would like to mount it on a piece of rock and need to know:

Can I remove it from the water while mounting or does it need to stay underwater like sponges? LFS told me to never allow it to touch air so I don't want to do anything that would harm it in any way.

What is a good "glue" to use to accomplish this task?

Thanks for any help.