| Taxon | Density |
| Echinocardium flavescens (O.F. Müller, 1776) | 602.6 |
| Ophiuroidea | 416.9 |
| Myriochele Malmgren, 1867 | 288.4 |
| Minuspio cirrifera (Wirén, 1883) | 281.8 |
| Owenia fusiformis Delle Chiaje, 1844 | 251.2 |
| Spiophanes bombyx (Claparède, 1870) | 151.4 |
| Spiophanes kroyeri Grube, 1860 | 79.4 |
| Sthenelais zetlandica McIntosh, 1876 | 79.4 |
| Aonides paucibranchiata Southern, 1914 | 70.8 |
| Urothoe elegans Spence Bate, 1857 | 70.8 |
| Thyasira Lamarck, 1818 | 70.8 |
| Harpinia antennaria Meinert, 1890 | 60.3 |
| Holothuroidea | 60.3 |
| Pholoe Johnston, 1839 | 60.3 |
| Lagis koreni Malmgren, 1866 | 60.3 |
| Ampharete Malmgren, 1866 | 50.1 |
| Aricidea catherinae Laubier, 1967 | 50.1 |
| Chaetozone setosa Malmgren, 1867 | 39.8 |
| Glycera Lamarck, 1818 | 39.8 |
| Amphiura filiformis (O.F. Müller, 1776) | 39.8 |
| Ampelisca gibba G.O. Sars, 1883 | 30.2 |
| Amphictene auricoma (O.F. Müller, 1776) | 30.2 |
| Pseudopolydora Czerniavsky, 1881 | 30.2 |
| Polydora (Polydora) socialis (Schmarda, 1861) | 30.2 |
| Poecilochaetus serpens Allen, 1904 | 20 |
| Notomastus latericeus Sars, 1851 | 20 |
| Streblosoma intestinalis [auct. misspelling] | 20 |
| Aoridae Stebbing, 1899 | 20 |
| Caudofoveata | 20 |
| Antalis entalis (Linnaeus, 1758) | 20 |
| Phaxas pellucidus (Pennant, 1777) | 20 |
| Nothria conchylega (Sars, 1835) | 20 |
| Nephtys hombergii Savigny in Lamarck, 1818 | 20 |
| Synchelidium maculatum Stebbing, 1906 | 20 |
| Eclysippe vanelli (Fauvel, 1936) | 20 |
| Nemertea | 20 |
| Timoclea ovata (Pennant, 1777) | 20 |
| Ophiura affinis Lütken, 1858 | 10 |
| Molgula Forbes, 1848 | 10 |
| Gitana sarsi Boeck, 1871 | 10 |
| Hyalinoecia tubicola (O.F. Müller, 1776) | 10 |
| Pleurogonium G. O. Sars, 1872 | 10 |
| Diastylis cornuta (Boeck, 1864) | 10 |
| Perioculodes longimanus (Spence Bate & Westwood, 1868) | 10 |
| Fabulina fabula (Gmelin, 1791) | 10 |
| Arctica islandica (Linnaeus, 1767) | 10 |
| Montacuta substriata (Montagu, 1808) | 10 |
| Serpulidae Rafinesque, 1815 | 10 |
| Anaitides mucosa (Örsted, 1843) | 10 |
| Aphrodita aculeata Linnaeus, 1758 | 10 |
| Glycinde nordmanni (Malmgren, 1866) | 10 |
| Goniada maculata Örsted, 1843 | 10 |
| Exogone (Parexogone) hebes (Webster & Benedict, 1884) | 10 |
| Exogone (Exogone) verugera (Claparède, 1868) | 10 |
| Pista cristata (Müller, 1776) | 10 |
| Ampharetidae Malmgren, 1866 | 10 |
| Prionospio malmgreni Claparède, 1868 | 10 |
| Levinsenia gracilis (Tauber, 1879) | 10 |
| Ophelina norvegica Støp-Bowitz, 1945 | 10 |
| Scoloplos armiger (Müller, 1776) | 10 |
| Aricidea wassi Pettibone, 1965 | 10 |
| Spio filicornis (Müller, 1776) | 10 |
| Scalibregma inflatum Rathke, 1843 | 10 |
| Cirratulus cirratus (O. F. Müller, 1776) | 10 |
| Macrochaeta clavicornis (M. Sars, 1835) | 10 |
