| Taxon | Density |
| Capitellidae Grube, 1862 | 1071.5 |
| Paradoneis lyra (Southern, 1914) | 436.5 |
| Spiophanes kroyeri Grube, 1860 | 416.9 |
| Thyasira Lamarck, 1818 | 380.2 |
| Philine quadrata (S. V. Wood, 1839) | 380.2 |
| Ophiuroidea | 331.1 |
| Ophiura affinis Lütken, 1858 | 323.6 |
| Paramphinome jeffreysii (McIntosh, 1868) | 281.8 |
| Pseudopolydora Czerniavsky, 1881 | 257 |
| Brachydiastylis resima (Krøyer, 1846) | 239.9 |
| Sipuncula | 239.9 |
| Pholoe Johnston, 1839 | 182 |
| Glycera lapidum Quatrefages, 1866 | 182 |
| Owenia fusiformis Delle Chiaje, 1844 | 158.5 |
| Holothuroidea | 158.5 |
| Sabellidae Latreille, 1825 | 151.4 |
| Tharyx Webster & Benedict, 1887 | 141.3 |
| Echinocardium flavescens (O.F. Müller, 1776) | 89.1 |
| Eudorella emarginata (Krøyer, 1846) | 89.1 |
| Notomastus latericeus Sars, 1851 | 79.4 |
| Ampharetidae Malmgren, 1866 | 70.8 |
| Amphiura chiajei Forbes, 1843 | 70.8 |
| Caulleriella Chamberlin, 1919 | 60.3 |
| Anthozoa | 60.3 |
| Phoronis Wright, 1856 | 50.1 |
| Leucon (Leucon) nasica (Krøyer, 1841) | 50.1 |
| Amphiura filiformis (O.F. Müller, 1776) | 39.8 |
| Aricidea catherinae Laubier, 1967 | 39.8 |
| Polydora (Polydora) socialis (Schmarda, 1861) | 39.8 |
| Scolelepis tridentata (Southern, 1914) | 30.2 |
| Poecilochaetus serpens Allen, 1904 | 30.2 |
| Laonice sarsi Söderström, 1920 | 30.2 |
| Minuspio cirrifera (Wirén, 1883) | 30.2 |
| Lumbrineris latreilli Audouin & Milne Edwards, 1833 | 30.2 |
| Streblosoma intestinalis [auct. misspelling] | 30.2 |
| Aphrodita aculeata Linnaeus, 1758 | 30.2 |
| Lagis koreni Malmgren, 1866 | 30.2 |
| Ampharete acutifrons (Grube, 1860) | 30.2 |
| Goniada norvegica Örsted, 1845 | 30.2 |
| Tmetonyx cicada (Fabricius, 1780) | 20 |
| Nicippe tumida Bruzelius, 1859 | 20 |
| Abra nitida (O. F. Müller, 1776) | 20 |
| Lunatia montagui (Forbes, 1838) | 20 |
| Myriochele Malmgren, 1867 | 20 |
| Amphictene auricoma (O.F. Müller, 1776) | 10 |
| Rhodine gracilior Tauber, 1879 | 10 |
| Paranaitis kosteriensis (Malmgren, 1867) | 10 |
| Glycera Lamarck, 1818 | 10 |
| Glycinde nordmanni (Malmgren, 1866) | 10 |
| Anaitides mucosa (Örsted, 1843) | 10 |
| Lumbrineris tetraura (Schmarda, 1861) | 10 |
| Ophelina norvegica Støp-Bowitz, 1945 | 10 |
| Levinsenia gracilis (Tauber, 1879) | 10 |
| Apistobranchus tullbergi (Théel, 1879) | 10 |
| Thyasira ferruginea (Locard, 1886) | 10 |
| Parvicardium minimum (R. A. Philippi, 1836) | 10 |
| Nemertea | 10 |
| Byblis gaimardi (Krøyer, 1846) | 10 |
| Caudofoveata | 10 |
| Antalis entalis (Linnaeus, 1758) | 10 |
| Nuculana minuta (O. F. Müller, 1776) | 10 |
| Portlandia philippiana (Nyst, 1845) | 10 |
| Limatula subauriculata (Montagu, 1808) | 10 |
| Sphaerodoridium claparedeii [auct. lapsus] | 10 |
| Nephtys hystricis McIntosh, 1900 | 10 |
| Harpinia antennaria Meinert, 1890 | 10 |
| Anonyx lilljeborgi Boeck, 1871 | 10 |
| Lamprops fasciatus G.O. Sars, 1863 | 10 |
