Annelids
type: Class
subclass of: RCBYQBHCTDnnpanK0HJ0I7w
definition: Annelids are a phylum of invertebrate animals known as Annelida, characterized by their segmented bodies and a true coelom, which acts as a hydrostatic skeleton. This group includes earthworms, leeches, and polychaetes, and they play vital roles in soil aeration and aquatic ecosystems.