I have several 10 inchers---Sam, Barney, and Fred. I used to be creeped out by them, but knowing how much good they do the corals, I've gotten rather amused: when the sinking pellets hit the sand, here comes Sam, who won't come all the way down, but who'll try to beat the hermits. I've seen Barney engage in tug-of-war with a big hermit, and win.