I had a dendro eat a stomatella a couple weeks ago (but it did it on its own in the middle of the night). It started spitting out the shell when I turned the lights on. Part of the snail was still attached, but somehow the dendro manuvered things just right and the shell fell off, but part of the snail was still in the mouth and the dendro slurped the snail meat back in. I wonder if this coral will do the same thing.