| Taxon | Density |
| Exogone (Exogone) verugera (Claparède, 1868) | 331.1 |
| Echinocyamus pusillus (O.F. Müller, 1776) | 98.1 |
| Ophelia borealis Quatrefages, 1866 | 62.5 |
| Cochlodesma (Bontaea) praetenue (Pulteney, 1799) | 55 |
| Dosinia exoleta (Linnaeus, 1758) | 53.7 |
| Spiophanes bombyx (Claparède, 1870) | 52.6 |
| Abra prismatica (Montagu, 1808) | 39.1 |
| Nemertea | 34 |
| Chaetozone setosa Malmgren, 1867 | 30.9 |
| Glycera Lamarck, 1818 | 30.2 |
| Owenia fusiformis Delle Chiaje, 1844 | 25.8 |
| Nephtys hombergii Savigny in Lamarck, 1818 | 20.1 |
| Sphaerosyllis bulbosa Southern, 1914 | 20 |
| Dosinia lupinus (Linnaeus, 1758) | 20 |
| Polycirrus Grube, 1850 | 20 |
| Spiophanes kroyeri Grube, 1860 | 20 |
| Aonides paucibranchiata Southern, 1914 | 20 |
| Orbinia sertulata (Savigny, 1822) | 20 |
| Mysella bidentata (Montagu, 1803) | 18.5 |
| Bathyporeia elegans Watkin, 1938 | 17.6 |
| Anthozoa | 17.4 |
| Moerella pygmaea (Lovén, 1846) | 13.4 |
| Nicomache lumbricalis (Fabricius, 1780) | 13.2 |
| Myriochele Malmgren, 1867 | 11.7 |
| Thracia phaseolina (Lamarck, 1818) | 11.7 |
| Nephtys longosetosa Örsted, 1842 | 10.2 |
| Pontocrates Boeck, 1871 | 10 |
| Acidostoma obesum (Spence Bate & Westwood, 1861) | 10 |
| Bodotria scorpioides (Montagu, 1804) | 10 |
| Pasiphaea sivado (Risso, 1816) | 10 |
| Musculus discors (Linnaeus, 1767) | 10 |
| Kelliella miliaris (R. A. Philippi, 1844) | 10 |
| Tridonta elliptica (T. Brown, 1827) | 10 |
| Travisia forbesii Johnston, 1840 | 10 |
| Sabellidae Latreille, 1825 | 10 |
| Serpulidae Rafinesque, 1815 | 10 |
| Lumbrineris tetraura (Schmarda, 1861) | 10 |
| Ascidiacea | 10 |
| Sipuncula | 10 |
| Amphiura chiajei Forbes, 1843 | 10 |
| Amphiura filiformis (O.F. Müller, 1776) | 8.4 |
| Antalis entalis (Linnaeus, 1758) | 8.3 |
| Gari fervensis (Gmelin, 1791) | 8.3 |
| Eteone longa (Fabricius, 1780) | 6.8 |
| Aricidea minuta Southward, 1956 | 6.8 |
| Aonides oxycephala (Sars, 1862) | 6.8 |
| Sthenelais limicola (Ehlers, 1864) | 6.7 |
| Phaxas pellucidus (Pennant, 1777) | 5.9 |
| Tellimya ferruginosa (Montagu, 1808) | 5 |
| Astarte sulcata (da Costa, 1778) | 5 |
| Tharyx Webster & Benedict, 1887 | 5 |
| Notomastus latericeus Sars, 1851 | 5 |
| Glycera lapidum Quatrefages, 1866 | 5 |
| Aricidea suecica Eliason, 1920 | 5 |
| Phylo kupfferi (Ehlers, 1874) | 5 |
| Spio goniocephala Thulin, 1957 | 5 |
| Echinocardium flavescens (O.F. Müller, 1776) | 5 |
| Nephtys cirrosa Ehlers, 1868 | 3.7 |
| Ensis Schumacher, 1817 | 3.4 |
| Nuculoma tenuis (Montagu, 1808) | 3.3 |
| Tridonta montagui (Dillwyn, 1817) | 3.3 |
| Laevicardium crassum (Gmelin, 1791) | 3.3 |
| Unciola planipes Norman, 1867 | 3.3 |
| Aricidea cerrutii Laubier, 1966 | 3.3 |
| Poecilochaetus serpens Allen, 1904 | 3.3 |
| Goniada maculata Örsted, 1843 | 3.3 |
| Lunatia poliana (Della Chiaje, 1826) | 3.3 |
| Flustra foliacea (Linnaeus, 1758) | 1.7 |
| Amphiura (Acrocnida) brachiata (Montagu, 1804) | 1.7 |
| Ophiura albida Forbes, 1839 | 1.7 |
| Timoclea ovata (Pennant, 1777) | 1.7 |
| Echinocardium pennatifidum Norman, 1868 | 1.7 |
| Syllidae Grube, 1850 | 1.7 |
| Exogone (Parexogone) hebes (Webster & Benedict, 1884) | 1.7 |
| Notophyllum foliosum (Sars, 1835) | 1.7 |
| Pholoe Johnston, 1839 | 1.7 |
| Scalibregma inflatum Rathke, 1843 | 1.7 |
| Scolelepis bonnieri (Mesnil, 1896) | 1.7 |
| Scolelepis (Scolelepis) cantabra (Rioja, 1918) | 1.7 |
| Spio filicornis (Müller, 1776) | 1.7 |
| Levinsenia gracilis (Tauber, 1879) | 1.7 |
| Ophelina norvegica Støp-Bowitz, 1945 | 1.7 |
| Harmothoe impar (Johnston, 1839) | 1.7 |
| Perioculodes longimanus (Spence Bate & Westwood, 1868) | 1.7 |
| Ampelisca brevicornis (A. Costa, 1853) | 1.7 |
| Leptocheirus hirsutimanus (Spence Bate & Westwood, 1862) | 1.7 |
| Nothria conchylega (Sars, 1835) | 1.7 |
| Circomphalus casina (Linnaeus, 1758) | 1.7 |
| Spisula elliptica (T. Brown, 1827) | 0.8 |
| Spisula subtruncata (da Costa, 1778) | 0.8 |
| Nephtys caeca (Fabricius, 1780) | 0.3 |
| Nephtys ciliata (Müller, 1788) | 0.3 |
