Was picking up some of my first tank corals from a LFS and wanted a sprig of xenia. The LFS I was at mostly had huge colonies but there was one they suggested that didn't look so hot, so I initially balked at getting it. The store owner rightly retorted: look, it's the same coral as those big colonies: that sprig just isn't in a good location, polyp extension and appearance is often all about location.
So, fair enough: that's often true! And he offers to sell it at a really good price anyhow.
So, I get the thing home, float it, and notice that... it's moving. I've never heard of Xenia being able to move. I look closer and... the whole darn thing is attached to a very much alive, very active snail.
I don't actually know if the store owner knew about this unlikely combo, but if so, his emphasis on "location" is pretty funny, in retrospect. Because this thing is never going to be in a single location.
(once I realized what I'd gotten, the hard part was thinking about acclimation: I didn't want to delay getting a softie into the new system but also didn't want the snail to die, so I tried the the technique of getting the snail to retract/expunge its water out of the water, then letting it stick above the waterline and enter the new water at it's own pace. I did this by doing a waterchange so that I could get the snail stuck to a the underside of a magfloat such that the xenia would be underwater while the snail was not. Everything seemed to go ok: we'll see how things go over the next few days)