Thanks for the replies - I know which hole he is in, and it's not deep at all. It just runs across the corner of the rock, so if I could get the rock out, it would be fairly easy. Unfortunately, the rock is very big and very heavy, and on the bottom. I'm not lying when I said I almost broke the tank putting it in. My tank is on a high stand, and it was a beast in get in. Taking the rock out will be my absolute last resort, and that will only be if starts killing stuff like crazy.
Jay, did you get the other mantis out, or is he still in there? I have 3 that I know of, but the other two are much smaller.
Now, the shop vac idea - that is an interesting one indeed. I must say it's defintely not one I thought of before. So you really think this could work without killing it? I know it sounds funny, but I don't want to kill it. It's not his fault he's in there.
Maybe I will leave it and see how he does. If I got lucky and he left things alone, then I would be fine with it. And, if they truly become more comfortable over time and start crusing around, I'm assuming he would be easier to catch then. I just don't know at this point, but if I do catch him alive, then I would be willing to ship, at no cost other than shipping. I am in Florida.
Thanks again for the help. .