| Class ASCIDIACEA |
| Order APLOUSOBRANCHIA |
| Family Clavelinidae |
| Clavelina Savigny, 1816 |
| Clavelina lepadiformis (O F Müller, 1776) |
| Pycnoclavella Garstang, 1891 |
| Pycnoclavella aurilucens Garstang, 1891 |
| Pycnoclavella producta (Milne-Edwards, 1841) |
| Pycnoclavella nana Lahille, 1890 |
| Pycnoclavella stolonialis Pérez-Portela, Goodwin, Picton & Turon, 2010 |
| Family Holozoidae |
| Distaplia della Valle, 1881 |
| Distaplia rosea della Valle, 1881 |
| Family Polycitoridae |
| Archidistoma Garstang, 1891 |
| Archidistoma aggregatum Garstang, 1891 |
| Family Polyclinidae |
| Polyclinum Savigny, 1816 |
| Polyclinum aurantium Milne-Edwards, 1841 |
| Synoicum Phipps, 1774 |
| Synoicum incrustatum (M Sars, 1851) |
| Synoicum pulmonaria (Ellis & Solander, 1786) |
| Morchellium Giard, 1872 |
| Morchellium argus (Milne-Edwards, 1841) |
| Sidnyum Savigny, 1816 |
| Sidnyum elegans (Giard, 1872) |
| Sidnyum turbinatum Savigny, 1816 |
| Aplidium Savigny, 1816 |
| Aplidium cf. glabrum (Verrill, 1871) |
| Aplidium nordmanni (Milne-Edwards, 1841) |
| Aplidium pallidum (Verrill, 1871) |
| Aplidium punctum (Giard, 1873) |
| Family Didemnidae |
| Trididemnum della Valle, 1881 |
| Trididemnum cereum (Giard, 1872) |
| Didemnum Savigny, 1816 |
| Didemnum maculosum (Milne-Edwards, 1841) |
| Polysyncraton Nott, 1891 |
| Polysyncraton lacazei (Giard, 1872) |
| Diplosoma MacDonald, 1859 |
| Diplosoma listerianum (Milne-Edwards, 1841) |
| Diplosoma spongiforme (Giard, 1872) |
| Lissoclinum Verrill, 1871 |
| Lissoclinum perforatum (Giard, 1872) |
| Order PHLEBOBRANCHIA |
| Family Cionidae |
| Ciona Fleming, 1822 |
| Ciona intestinalis (Linnaeus, 1767) |
| Family Diazonidae |
| Diazona Savigny, 1816 |
| Diazona violacea Savigny, 1816 |
| Family Perophoridae |
| Perophora Wiegmann, 1835 |
| Perophora listeri Forbes, 1848 |
| Family Corellidae |
| Corella Alder & Hancock, 1870 |
| Corella parallelogramma (O F Müller, 1776) |
| Family Ascidiidae |
| Ascidiella Roule, 1884 |
| Ascidiella aspersa (O F Müller, 1776) |
| Ascidiella scabra (O F Müller, 1776) |
| Ascidia Linnaeus, 1767 |
| Ascidia conchilega O F Müller, 1776 |
| Ascidia mentula O F Müller, 1776 |
| Ascidia virginea O F Müller, 1776 |
| Phallusia Savigny, 1816 |
| Phallusia mammillata (Cuvier, 1815) |
| Order STOLIDOBRANCHIA |
| Family Styelidae |
| Styela Fleming, 1822 |
| Styela clava Herdman, 1881 |
| Styela gelatinosa Traustedt, 1886 |
| Polycarpa Heller, 1877 |
| Polycarpa fibrosa (Stimpson, 1852) |
| Polycarpa pomaria (Savigny, 1816) |
| Polycarpa scuba Monniot, 1970 |
| Dendrodoa MacLeay, 1824 |
| Dendrodoa grossularia (van Beneden, 1846) |
| Distomus Gaertner in Pallas, 1774 |
| Distomus variolosus Gaertner in Pallas, 1774 |
| Stolonica Lacaze-Duthiers & Delage, 1892 |
| Stolonica socialis Hartmeyer, 1903 |
| Botryllus Gaertner in Pallas, 1774 |
| Botryllus schlosseri (Pallas, 1766) |
| Botrylloides Milne-Edwards, 1841 |
| Botrylloides leachi (Savigny, 1816) |
| Family Pyuridae |
| Boltenia Savigny, 1816 |
| Boltenia echinata (Linnaeus, 1767) |
| Pyura Molina, 1782 |
| Pyura microcosmus (Savigny, 1816) |
| Pyura tessellata (Forbes, 1848) |
| Family Molgulidae |
| Molgula Forbes in Forbes & Hanley, 1848 |
| Molgula occulta Kupffer, 1875 |
| Molgula oculata Forbes, 1848 |
| Eugyra Alder & Hancock, 1870 |
| Eugyra arenosa (Alder & Hancock, 1848) |