I have about 80-90 lbs. of liverock. It was split between 2 of the tubbs. I didn't see anything when I took the rock out of the old tank, or when I put it in the new tank from the tubbs. Could a mantis be hiding in the rock when I take it out of the water?

I've spent many nights looking at the old tank with only the mmon lights on and didn't see anything. Any other ideas?