| Taxon | Density |
| Capitellidae Grube, 1862 | 2691.5 |
| Spiophanes kroyeri Grube, 1860 | 645.7 |
| Thyasira Lamarck, 1818 | 616.6 |
| Ophiuroidea | 537 |
| Paradoneis lyra (Southern, 1914) | 501.2 |
| Pseudopolydora Czerniavsky, 1881 | 426.6 |
| Notomastus latericeus Sars, 1851 | 363.1 |
| Psammechinus miliaris (P.L.S. Müller, 1771) | 190.5 |
| Streblosoma intestinalis [auct. misspelling] | 182 |
| Phoronis Wright, 1856 | 158.5 |
| Nemertea | 158.5 |
| Sabellidae Latreille, 1825 | 151.4 |
| Pholoe Johnston, 1839 | 141.3 |
| Minuspio cirrifera (Wirén, 1883) | 128.8 |
| Anthozoa | 128.8 |
| Levinsenia gracilis (Tauber, 1879) | 128.8 |
| Glycera lapidum Quatrefages, 1866 | 120.2 |
| Eriopisa elongata (Bruzelius, 1859) | 120.2 |
| Leucon (Leucon) nasica (Krøyer, 1841) | 120.2 |
| Holothuroidea | 109.6 |
| Caulleriella Chamberlin, 1919 | 109.6 |
| Polydora (Polydora) socialis (Schmarda, 1861) | 89.1 |
| Paramphinome jeffreysii (McIntosh, 1868) | 89.1 |
| Apseudes spinosus (M. Sars, 1858) | 79.4 |
| Brachydiastylis resima (Krøyer, 1846) | 79.4 |
| Harpinia antennaria Meinert, 1890 | 79.4 |
| Harpinia crenulata (Boeck, 1871) | 79.4 |
| Owenia fusiformis Delle Chiaje, 1844 | 79.4 |
| Laonice sarsi Söderström, 1920 | 70.8 |
| Ampharete Malmgren, 1866 | 70.8 |
| Amaeana trilobata (Sars, 1863) | 60.3 |
| Scolelepis tridentata (Southern, 1914) | 50.1 |
| Gnathia oxyuraea (Lilljeborg, 1855) | 50.1 |
| Eclysippe vanelli (Fauvel, 1936) | 50.1 |
| Ophiura affinis Lütken, 1858 | 39.8 |
| Philine scabra (O. F. Müller, 1784) | 39.8 |
| Nephtys hombergii Savigny in Lamarck, 1818 | 39.8 |
| Thyasira ferruginea (Locard, 1886) | 30.2 |
| Spiophanes bombyx (Claparède, 1870) | 30.2 |
| Lumbrineris tetraura (Schmarda, 1861) | 30.2 |
| Ceratocephale loveni Malmgren, 1867 | 30.2 |
| Goniada maculata Örsted, 1843 | 20 |
| Pista cristata (Müller, 1776) | 20 |
| Anaitides mucosa (Örsted, 1843) | 20 |
| Sthenelais limicola (Ehlers, 1864) | 20 |
| Aricidea catherinae Laubier, 1967 | 20 |
| Lagis koreni Malmgren, 1866 | 20 |
| Myriochele Malmgren, 1867 | 20 |
| Nothria conchylega (Sars, 1835) | 20 |
| Synchelidium maculatum Stebbing, 1906 | 20 |
| Antalis entalis (Linnaeus, 1758) | 20 |
| Timoclea ovata (Pennant, 1777) | 20 |
| Amphiura filiformis (O.F. Müller, 1776) | 20 |
| Cuspidaria rostrata (L. Spengler, 1793) | 10 |
| Leptochiton asellus (Gmelin, 1791) | 10 |
| Amphiura chiajei Forbes, 1843 | 10 |
| Astacilla longicornis (Sowerby, 1806) | 10 |
| Hemilamprops roseus (Norman, 1863) | 10 |
| Arrhis phyllonyx (M. Sars, 1858) | 10 |
| Tridonta borealis Schumacher, 1817 | 10 |
| Abra nitida (O. F. Müller, 1776) | 10 |
| Leptostylis villosa Sars, 1869 | 10 |
| Calocaris macandreae Bell, 1846 | 10 |
| Ampharetidae Malmgren, 1866 | 10 |
| Terebellides stroemii Sars, 1835 | 10 |
| Serpulidae Rafinesque, 1815 | 10 |
| Ditrupa arietina (O. F. Müller, 1776) | 10 |
| Chaetoparia nilssoni Malmgren, 1867 | 10 |
| Aphrodita aculeata Linnaeus, 1758 | 10 |
| Glycinde nordmanni (Malmgren, 1866) | 10 |
