Simplify the following text for a Grade 13 native English-speaking person.
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: Nor are all extremophiles unicellular ; protostome animals found in similar environments .