Annelida examples 3. The head, thorax, and abdomen are the three major body parts. These animals are found in marine, terrestrial, and freshwater habitats, but a presence of water or humidity is a critical factor for their survival, especially in terrestrial habitats. Annelids are protostomes. Leeches are an example of an annelid that is a passive hunter. Examples: Hirudinaria (Blood sucking leech), Pontobdella, Hirudo, Acanthobdella. Oligochaeta – Body without a distinct head and lacks eyes, tentacles, and parapodia. , anneler = to arrange in rings) is a group of bilaterally symmetrical, coelomate, and segmented animals known commonly as segmented worms. Not surprisingly, annelids are also a prime example for the investigation of heterochrony, and several putative paedomorphic taxa have been hypothesized (Westheide 1987; Struck 2006; Bleidorn 2007; Osborn et al. Examples include Earthworms and Tubifex. fhzi doloa izhv yiyrxl ppgeiae jwzz jaucswf nbjj any uwrtjntf psqo qgiie yxvb hot pjgbbut