Something is snacking on my xenia...?

[Pier Pressure]

Hi, everybody.

Every single day my xenia seems to be missing more and more of its pulsing thingies. I am afraid somebody is eating it, but am unsure what is known to snack on xenia. My hermits seem to spend a lot of time with it and so does the arrow crab.

Tank inhabitants include:

true perc, royal gramma, firefish, some sort of blue and yellow damsel;

hermit crabs, an arrow crab, snails, a sea apple, gbt anemone, sebae anemone, tube anemone, bristle stars, bristle worms (I have some big ones, too), a red star fish, and many little white starfish.

Does anything on this list like the taste of xenia? Thanks for letting me know!