The middle one looks like the one I have but I'm drawing a blank On the name. If it is the same it is definately and encruster
But it also looks a little like this one who's name I also can't remember. I'm bad about names. I have over 30 sticks growing out and can only name a couple.
Sorry I'm pretty useless but if it is one of these at least you can see how they like to encrust
Hahaha. Still. Very cool. A little blurry. Mine is too. I need an under water case for my phone to take better pics! Not sure the polyps are the same structure. Hard to tell.