Seriously though, I added a Mexican Turbo Snail to help combat a macro problem. At first it chowed through algae just as advertized, but a couple mornings later I found it on the sand instead of grazing live rock. After placing it back on a nice flat spot of LR rich with macro it hasn't moved in about 24 hours. The snail is withdrawn maybe a quarter inch up into the opening of its shell. Anything to worry about? Thanks.