Grab it with your hands? Read this article and see if you don't change your mind. http://saltaquarium.about.com/gi/dyn...tro%2Fwhat.htm
This part especially caught my attention:
The strike of one of the larger smashers (25 cm long Hemisquilla ensigera) has been estimated to produce a force approaching that of a 22 caliber bullet, and these animals have been reported to break open aquarium walls made of double layered safety glass. It is no wonder then that mantis shrimps are also known as "thumb splitters."