What I found in my tank today

[Scavenger]

Well it didn't exactly "break" in half, more got ripped in half. Damn that thing could move fast!

I was thinking last night the clicking sound could have been those monsterous mandible thingys on its yap. strong enough to pack all those frags into its den (As seen in photos), therefor strong enough to make clicky noises.

Glad we got it out, hopefully your corals are a little safer from becoming den ornaments.