Loud sounds at night!

[justinl]

any mantis that you'll ever see will be diurnal; very unlikely you'll actually see it at night although my mantis has been up late clicking away before (not often though). pistol shrimp are secretive pretty much all of the time. some pistols will make pretty obvious tunnels in the sand. watch around the tank for broken shells of hermits/crabs/snails (mantis).