Acanthocephala (spiny-headed worms) (946)
Annelida (segmented worms) (13,245)   (2)   (4)
Arthropoda (crustaceans, insects, spiders, and relatives) (883,578)   (338)   (97)
Brachiopoda (lamp shells) (411)
Bryozoa (5,673)   (5)
Chaetognatha (arrow worms) (178)
Chordata (vertebrates and tunicates) (64,206)   (3,449)   (161)
Cnidaria (cnidarians) (9,912)   (31)   (2)
Ctenophora (comb jellies) (166)   (1)
Cycliophora (2)
Echinodermata (echinoderms) (4,615)   (2)
Echiura (burrow worms and echiuran worms) (179)
Gastrotricha (gastrotrichs) (716)
Gnathostomulida (gnathostomulids) (98)
Hemichordata (hemichordates) (106)
Kamptozoa (171)
Kinorhyncha (157)
Loricifera (22)
Micrognathozoa (1)
Mollusca (mollusks) (14,229)   (157)   (28)
Myxozoa (ciliated protozoans) (40)   (1)
Nematoda (3,457)   (1)
Nematomorpha (gordian worms and horsehair worms) (238)
Nemertea (proboscis worms) (1,332)
Onychophora (velvet worms) (167)   (5)
Orthonectida (24)
Phoronida (phoronids) (10)
Placozoa (1)
Platyhelminthes (flatworms) (3,322)
Porifera (sponges) (8,122)   (1)
Priapulida (priapulid worms) (19)
Rhombozoa (89)
Rotifera (rotifers) (1,994)
Sipuncula (sipunculan worms) (206)
Tardigrada (tardigrades) (1,018)
Xenoturbellida (2)

(...) = Species count
(...) = Endangered count
(...) = Invasive count