| Taxon | Density |
| Owenia fusiformis Delle Chiaje, 1844 | 1778.3 |
| Thyasira Lamarck, 1818 | 616.6 |
| Spiophanes kroyeri Grube, 1860 | 302 |
| Philine scabra (O. F. Müller, 1784) | 288.4 |
| Myriochele Malmgren, 1867 | 281.8 |
| Ophiuroidea | 239.9 |
| Spiophanes bombyx (Claparède, 1870) | 190.5 |
| Poecilochaetus serpens Allen, 1904 | 169.8 |
| Amphiura filiformis (O.F. Müller, 1776) | 169.8 |
| Glycera lapidum Quatrefages, 1866 | 141.3 |
| Capitellidae Grube, 1862 | 128.8 |
| Nemertea | 89.1 |
| Pseudopolydora Czerniavsky, 1881 | 79.4 |
| Minuspio cirrifera (Wirén, 1883) | 79.4 |
| Aricidea catherinae Laubier, 1967 | 79.4 |
| Anthozoa | 70.8 |
| Amphictene auricoma (O.F. Müller, 1776) | 70.8 |
| Parvicardium minimum (R. A. Philippi, 1836) | 70.8 |
| Caudofoveata | 60.3 |
| Ampharetidae Malmgren, 1866 | 60.3 |
| Pholoe Johnston, 1839 | 60.3 |
| Sabellidae Latreille, 1825 | 60.3 |
| Apistobranchus tullbergi (Théel, 1879) | 60.3 |
| Aonides paucibranchiata Southern, 1914 | 60.3 |
| Scaphander Montfort, 1810 | 50.1 |
| Phaxas pellucidus (Pennant, 1777) | 39.8 |
| Phoronis Wright, 1856 | 39.8 |
| Lunatia montagui (Forbes, 1838) | 30.2 |
| Thyasira ferruginea (Locard, 1886) | 30.2 |
| Pulsellum Stoliczka, 1868 | 30.2 |
| Eriopisa elongata (Bruzelius, 1859) | 30.2 |
| Prionospio malmgreni Claparède, 1868 | 30.2 |
| Scoloplos armiger (Müller, 1776) | 30.2 |
| Aricidea wassi Pettibone, 1965 | 20 |
| Lumbrineris tetraura (Schmarda, 1861) | 20 |
| Levinsenia gracilis (Tauber, 1879) | 20 |
| Caulleriella Chamberlin, 1919 | 20 |
| Chaetozone setosa Malmgren, 1867 | 20 |
| Nephtys longosetosa Örsted, 1842 | 20 |
| Glycinde nordmanni (Malmgren, 1866) | 20 |
| Goniada maculata Örsted, 1843 | 20 |
| Eudorella truncatula (Bate, 1856) | 20 |
| Spisula elliptica (T. Brown, 1827) | 20 |
| Abra nitida (O. F. Müller, 1776) | 20 |
| Sipuncula | 20 |
| Holothuroidea | 20 |
| Molgula Forbes, 1848 | 10 |
| Abra prismatica (Montagu, 1808) | 10 |
| Thracia convexa (W. Wood, 1815) | 10 |
| Psammechinus miliaris (P.L.S. Müller, 1771) | 10 |
| Brissopsis lyrifera (Forbes, 1841) | 10 |
| Perioculodes longimanus (Spence Bate & Westwood, 1868) | 10 |
| Harpinia antennaria Meinert, 1890 | 10 |
| Hippomedon denticulatus (Spence Bate, 1857) | 10 |
| Scopelocheirus hopei (A. Costa in Hope, 1851) | 10 |
| Exogone (Exogone) verugera (Claparède, 1868) | 10 |
| Paramphinome jeffreysii (McIntosh, 1868) | 10 |
| Pycnogonidae Wilson, 1878 | 10 |
| Gammaropsis maculata (Johnston, 1828) | 10 |
| Nuculoma tenuis (Montagu, 1808) | 10 |
| Cylichnina umbilicata (Montagu, 1803) | 10 |
| Tharyx Webster & Benedict, 1887 | 10 |
| Diplocirrus glaucus (Malmgren, 1867) | 10 |
| Paradoneis lyra (Southern, 1914) | 10 |
| Lumbrineris latreilli Audouin & Milne Edwards, 1833 | 10 |
| Anaitides mucosa (Örsted, 1843) | 10 |
| Spio filicornis (Müller, 1776) | 10 |
| Notomastus latericeus Sars, 1851 | 10 |
| Praxillella affinis (M. Sars in G.O. Sars, 1872) | 10 |
| Sthenelais limicola (Ehlers, 1864) | 10 |
| Anobothrus gracilis (Malmgren, 1866) | 10 |
| Trichobranchus glacialis Malmgren, 1866 | 10 |
| Eteone flava (Fabricius, 1780) | 10 |
| Streblosoma intestinalis [auct. misspelling] | 10 |
