There are fev invertebrates on the endangered species list because world widc thcre ac relatively few Invcrtcbratcs whcn compared plants. humons biased and consider mammals and birds more interesting and dcsinble: Since therc , 532 invertcbrates considered endangered none these answers are truc: inucrtcbrales arc morc numctous and {hc rclativc pcrccntages are similar. 0 itis extrenlely difncult Identify and count inveriebrales