| Taxon | Density |
| Myriochele Malmgren, 1867 | 4168.7 |
| Anthozoa | 112.2 |
| Ophiura albida Forbes, 1839 | 112.2 |
| Sabellaria spinulosa (Leuckart, 1849) | 81.3 |
| Lumbrineris latreilli Audouin & Milne Edwards, 1833 | 64.6 |
| Scoloplos armiger (Müller, 1776) | 60.3 |
| Ampelisca tenuicornis Liljeborg, 1856 | 31.6 |
| Thyasira Lamarck, 1818 | 31.6 |
| Goniada maculata Örsted, 1843 | 23.4 |
| Nephtys hombergii Savigny in Lamarck, 1818 | 20 |
| Ampelisca diadema (A. Costa, 1853) | 20 |
| Spiophanes bombyx (Claparède, 1870) | 20 |
| Chaetozone setosa Malmgren, 1867 | 16.6 |
| Anobothrus gracilis (Malmgren, 1866) | 15.1 |
| Lumbrineris fragilis (O.F. Müller, 1776) | 15.1 |
| Nemertea | 13.5 |
| Timoclea ovata (Pennant, 1777) | 13.2 |
| Levinsenia gracilis (Tauber, 1879) | 13.2 |
| Siphonoecetes (Centraloecetes) kroyeranus Spence Bate, 1857 | 11.7 |
| Thracia phaseolina (Lamarck, 1818) | 11.7 |
| Amphiura filiformis (O.F. Müller, 1776) | 10 |
| Chaetoderma nitidulum Lovén, 1844 | 10 |
| Mysella bidentata (Montagu, 1803) | 10 |
| Nereis zonata Malmgren, 1867 | 8.3 |
| Glycera lapidum Quatrefages, 1866 | 8.3 |
| Capitellidae Grube, 1862 | 8.3 |
| Pholoe Johnston, 1839 | 8.3 |
| Rhodine gracilior Tauber, 1879 | 8.3 |
| Anaitides mucosa (Örsted, 1843) | 6.8 |
| Paradoneis lyra (Southern, 1914) | 6.8 |
| Prionospio malmgreni Claparède, 1868 | 5 |
| Terebellides stroemii Sars, 1835 | 5 |
| Ampharete Malmgren, 1866 | 5 |
| Hydroides norvegica Gunnerus, 1768 | 5 |
| Atelecyclus rotundatus (Olivi, 1792) | 5 |
| Nuculana minuta (O. F. Müller, 1776) | 5 |
| Phoronis muelleri Selys-Longchamps, 1903 | 5 |
| Sipuncula | 5 |
| Circomphalus casina (Linnaeus, 1758) | 5 |
| Acanthocardia echinata (Linnaeus, 1758) | 5 |
| Sabellidae Latreille, 1825 | 3.4 |
| Lagis koreni Malmgren, 1866 | 3.3 |
| Poecilochaetus serpens Allen, 1904 | 3.3 |
| Musculus niger (J. E. Gray, 1824) | 3.3 |
| Goodallia triangularis (Montagu, 1803) | 3.3 |
| Antalis entalis (Linnaeus, 1758) | 3.3 |
| Maera othonis (H. Milne Edwards, 1830) | 3.3 |
| Urothoe elegans Spence Bate, 1857 | 3.3 |
| Glycinde nordmanni (Malmgren, 1866) | 3.3 |
| Glycera celtica O'Connor, 1987 | 3.3 |
| Nereis Linnaeus, 1758 | 3.3 |
| Azorinus chamasolen (da Costa, 1778) | 3.3 |
| Mya truncata Linnaeus, 1758 | 3.3 |
| Leptognathia longiremis (Lilljeborg, 1864) | 3.3 |
| Magelona rosea Moore, 1907 | 3.3 |
| Ampharete acutifrons (Grube, 1860) | 3.3 |
| Cardium ovale G. B. Sowerby II, 1840 | 1.7 |
| Dosinia exoleta (Linnaeus, 1758) | 1.7 |
| Chamelea gallina (Linnaeus, 1758) | 1.7 |
| Arctica islandica (Linnaeus, 1767) | 1.7 |
| Phaxas pellucidus (Pennant, 1777) | 1.7 |
| Velutina velutina (O. F. Müller, 1776) | 1.7 |
| Acteon tornatilis (Linnaeus, 1758) | 1.7 |
| Cylichna cylindracea (Pennant, 1777) | 1.7 |
| Echinocardium flavescens (O.F. Müller, 1776) | 1.7 |
| Corella parallelogramma (Müller, 1776) | 1.7 |
| Styela coriacea (Alder & Hancock, 1848) | 1.7 |
| Nereis (Nereis) elitoralis Eliason, 1962 | 1.7 |
| Kefersteinia cirrhata (Keferstein, 1862) | 1.7 |
| Synelmis klatti (Friedrich, 1950) | 1.7 |
| Glycera rouxii Audouin & Milne Edwards, 1833 | 1.7 |
| Verruca stroemia (O.F. Müller, 1776) | 1.7 |
| Harpinia antennaria Meinert, 1890 | 1.7 |
| Atylus vedlomensis (Spence Bate & Westwood, 1862) | 1.7 |
| Ampelisca brevicornis (A. Costa, 1853) | 1.7 |
| Photis reinhardi Krøyer, 1842 | 1.7 |
| Nuculoma tenuis (Montagu, 1808) | 1.7 |
| Pleurocrypta longibranchiata (Bate & Westwood, 1867) | 1.7 |
| Petalosarsia declivis (Sars, 1865) | 1.7 |
| Ampelisca spinipes Boeck, 1861 | 1.7 |
| Tridonta elliptica (T. Brown, 1827) | 1.7 |
| Tridonta montagui (Dillwyn, 1817) | 1.7 |
| Modiolus Lamarck, 1799 | 1.7 |
| Lucinoma borealis (Linnaeus, 1767) | 1.7 |
| Aonides paucibranchiata Southern, 1914 | 1.7 |
| Minuspio cirrifera (Wirén, 1883) | 1.7 |
| Polydora (Polydora) flava Claparède, 1870 | 1.7 |
| Orbinia sertulata (Savigny, 1822) | 1.7 |
| Priapulus caudatus Lamarck, 1816 | 1.7 |
| Spio filicornis (Müller, 1776) | 1.7 |
| Aricidea minuta Southward, 1956 | 1.7 |
| Aricidea simonae Laubier & Ramos, 1974 | 1.7 |
| Praxillura longissima Arwidsson, 1906 | 1.7 |
| Rhodine Malmgren, 1865 | 1.7 |
| Ampharete finmarchica (M. Sars, 1865) | 1.7 |
| Scalibregma inflatum Rathke, 1843 | 1.7 |
| Magelona F. Müller, 1858 | 1.7 |
| Anaitides rosea (McIntosh, 1877) | 1.7 |
| Eumida sanguinea (Örsted, 1843) | 1.7 |
| Eteone longa (Fabricius, 1780) | 1.7 |
| Amaeana trilobata (Sars, 1863) | 1.7 |
| Polycirrus medusa Grube, 1850 | 1.7 |
