"CNIDARIANS: SIMPLE ANIMALS WITH A STING!" Cnidarians: Simple Animals with a Sting! Cnidarians: Simple Animals with a Sting! "CNIDARIANS: SIMPLE ANIMALS WITH A STING!" Oceanic Research.org: As maravilhas dos oceanos [em inglês] "CNIDARIANS: SIMPLE ANIMALS WITH A STING!" Cnidarians: Simple Animals with a Sting! cnidarians