Invertebrates Here are Pierre Wildlife’s invertebrates species. We chose to follow the taxonomy and broad species group described in the WORMS website. ARACHNIDS, CENTIPEDES </br>AND MILLIPEDES INSECTS </br> AND RELATIVES POLYPS </br>AND RELATIVES CRUSTACEANS AND</br>HORSESHOE CRABS MOLLUSKS, LEECHES </br>AND WORMS ECHINODERMS, SPONGES</br>AND HYDROZOAS