So I picked up a gorgeous red and blue giant hermit crab. Figured I could use some more clean up crew and this is my first crab. LFS says they're coral "safe".. a few hours in and my son and I are watching him -we name him "Mr. Crabs" from Spongebob. That very second as we are watching, he turbos his way up a rock, sits on a small Xenia and starts ripping it up. I mean little Xenia arms were flying everywhere. And he's looking right at me the whole time. I grabbed a feeding tube rod and knocked him off. He knew he was guilty because he took off into the caves of my live rock and is still hiding in the back. A small xenia frag no big deal, but if he touches one of my torches or Gonipora I think Mr. Crabs is making a trip to Bikini Bottom