Original: Neither are all extremophiles unicellular ; protostome animals found in similar environments include the Pompeii worm , the psychrophilic Grylloblattodea ( insects ) , Antarctic krill ( a crustacean ) , and the '' water bear '' .
Simplified: In : J. Lederberg ( ed ) Encyclopedia of Microbiology , 2nd ed , Vol 2 , pp317 -- 337 .