A type of barnacle called Rhizocephala will take over a crabs organs and brain and control them like a zombie! Were putting out new episodes Monday-Sunday .\rbr\rbrI study this parasitic barnacle (Briarosaccus callosus) that castrates king crabs, taking over their bodies....and turning them into zombie crabs!\rbr\rbrThe world is full of parasites: mindsuckers that spread their genes by hijacking a host and turning it into a real-life zombie. The November issue of National .\rbr\rbrThis parasite makes male crabs think that theyre pregnant females.