Invertebrate sea life includes Cnidaria such as jellyfish and sea anemones; phyla Platyhelminthes, Nemertea, Annelida, Sipuncula, Echiura, Chaetognatha, and Phoronida; Mollusca including shellfish, squid, octopus; Arthropoda including Chelicerata and Crustacea; Porifera; Bryozoa; Echinodermata including starfish; and Urochordata including sea squirts or tunicates.
32.
""'Parapionosyllis winnunga " "'is a species belonging to the phylum Annelida, a group known as the segmented worms . " Parapionosyllis winnunga " is characterized by the shape of the blades of its compound chaetae, which have a long subdistal spine, in turn much longer than in other cogenerate species.
33.
When excluding internal parasites, free living species in terrestrial environments are represented by the following ten phyla : Flatworms ( Planarians ), Nemertea ( ribbon worms ), Nematoda ( roundworms ), Rotifers, Tardigrada ( water bears ), Onychophora ( velvet worms ), Arthropods, mollusks ( gastropods : land snails and slugs ), Annelida and Chordata ( tetrapods ).
34.
These are made up of 41 species of mammals, 67 species of birds, 8 species of amphibians and reptiles, 32 species of fish, 173 species of insects, 12 species of mollusks, 26 species of cancroid, 7 species of annelida, 3 species of centipedes, 2 species of nematodes, 2 species of hydro polyps and 2 species of chubby-faced.
35.
For example, you should quickly realize that Porifera and Placozoa don't have any legs, Chordata either have no legs or four legs, etc . Aside from the aforementioned examples located under Arthropoda and Mollusca, other places to look are Annelida ( if parapodia count as legs ), Tardigrada, Lobopodia, Echinodermata, etc .-and that's a brief glance through.
36.
These communities host sponges ( Porifera ), sea anemones, jellyfish ( Cnidaria ), sea mats and hornwrack ( Bryozoa ), segmented worms ( Annelida ) snails, bivalves, squids and octopuses ( Mollusca ), starfishes and sea urchins ( Echinodermata ), crabs, lobsters and shrimps ( Arthropoda ) and little known groups such as Echiura, Priapulida, Sipuncula, Brachiopoda, Pogonophora, Phoronida and Hemichordata.
37.
""'Sphaerosyllis bardukaciculata " "'is a species belonging to the phylum Annelida, a group known as the segmented worms . " Sphaerosyllis bardukaciculatan " is similar to " Sphaerosyllis aciculata " from Florida; its chaetae are almost identical; the former, however, differs by having longer antennae and anal cirri, as well as parapodial glands with granular material.
38.
""'Sphaerosyllis goorabantennata " "'is a species belonging to the phylum Annelida, a group known as the segmented worms . " Sphaerosyllis goorabantennata " is distinct by its small size, small and unevenly distributed papillae, as well as by its particularly long antennae and tentacular cirri . " Sphaerosyllis minima " and " S . minima magnapapillata " are also small, but their antennae and tentacular cirri are significantly shorter, like its cogenerate species.
