Ya I think that is one of them. Read how they are not really shrimp and about the club or hammer type and how fast the claw moves and how they are being researched to improve body armor. Apperantly one of those lil guys is/was creating havoc in 1,300 gal tank in San Fran; killing snails by the handfuls and is too sneaky/fast for the keepers to catch it. Also read how they can break normal glass easily and how they will never be in the petting tank ever. Wether or not you are religious in any way, anyone can appritiate the irony of no matter how smart man thinks he is we are still learning things from nature and the simplest of life forms.