| Taxon | Density |
| Anomia ephippium Linnaeus, 1758 | 128.8 |
| Pholoe Johnston, 1839 | 97.7 |
| Modiolus modiolus (Linnaeus, 1758) | 95.5 |
| Capitellidae Grube, 1862 | 85.1 |
| Pomatoceros triqueter (Linnaeus, 1758) | 70.8 |
| Mysella bidentata (Montagu, 1803) | 58.9 |
| Lepidonotus squamatus (Linnaeus, 1758) | 55 |
| Sipuncula | 50.1 |
| Leptochiton asellus (Gmelin, 1791) | 47.9 |
| Syllidae Grube, 1850 | 31.6 |
| Kefersteinia cirrhata (Keferstein, 1862) | 30.2 |
| Mya truncata Linnaeus, 1758 | 28.2 |
| Hiatella arctica (Linnaeus, 1767) | 23.4 |
| Ophiothrix fragilis (Abildgaard in O.F. Müller, 1789) | 21.9 |
| Pisidia longicornis (Linnaeus, 1767) | 18.2 |
| Glycera lapidum Quatrefages, 1866 | 16.6 |
| Pherusa plumosa (Müller, 1776) | 15.1 |
| Scoloplos armiger (Müller, 1776) | 15.1 |
| Phoronis hippocrepia Wright, 1856 | 15.1 |
| Lumbrineris latreilli Audouin & Milne Edwards, 1833 | 13.2 |
| Eteone longa (Fabricius, 1780) | 13.2 |
| Sphenia binghami W. Turton, 1822 | 13.2 |
| Upogebia stellata (Montagu, 1808) | 11.7 |
| Onchidoris bilamellata (Linnaeus, 1767) | 11.7 |
| Hydrozoa | 11.7 |
| Polycirrus medusa Grube, 1850 | 10 |
| Owenia fusiformis Delle Chiaje, 1844 | 10 |
| Cardium ovale G. B. Sowerby II, 1840 | 10 |
| Exogone (Parexogone) hebes (Webster & Benedict, 1884) | 8.3 |
| Nephtys ciliata (Müller, 1788) | 8.3 |
| Capitella capitata (Fabricius, 1780) | 8.3 |
| Cirripedia | 8.3 |
| Galathea intermedia Lilljeborg, 1851 | 6.8 |
| Pinnotheres pisum (Linnaeus, 1767) | 6.8 |
| Praxillura longissima Arwidsson, 1906 | 6.8 |
| Caulleriella Chamberlin, 1919 | 6.8 |
| Chaetozone setosa Malmgren, 1867 | 6.8 |
| Anthozoa | 6.8 |
| Lunatia poliana (Della Chiaje, 1826) | 6.8 |
| Echinocyamus pusillus (O.F. Müller, 1776) | 6.8 |
| Spiophanes kroyeri Grube, 1860 | 5 |
| Odontosyllis gibba Claparède, 1863 | 5 |
| Anobothrus gracilis (Malmgren, 1866) | 5 |
| Scalibregma inflatum Rathke, 1843 | 5 |
| Sabellidae Latreille, 1825 | 5 |
| Paphia rhomboides (Pennant, 1777) | 5 |
| Timoclea ovata (Pennant, 1777) | 5 |
| Holothuroidea | 3.4 |
| Dendrodoa grossularia (Van Beneden, 1846) | 3.3 |
| Ampharete acutifrons (Grube, 1860) | 3.3 |
| Amphiura (Ophiopeltis) securigera (Düben & Koren, 1846) | 3.3 |
| Buccinum undatum Linnaeus, 1758 | 3.3 |
| Lichenoporidae Smitt, 1867 | 3.3 |
| Porella concinna (Busk, 1854) | 3.3 |
| Escharella immersa (Fleming, 1828) | 3.3 |
| Microporella ciliata (Pallas, 1766) | 3.3 |
| Liocarcinus pusillus (Leach, 1816) | 3.3 |
| Chlamys varia (Linnaeus, 1758) | 3.3 |
| Amphilochus manudens Spence Bate & Westwood, 1862 | 3.3 |
| Janira maculosa Leach, 1814 | 3.3 |
| Eualus pusiolus (Krøyer, 1841) | 3.3 |
| Eumida sanguinea (Örsted, 1843) | 3.3 |
| Diplocirrus glaucus (Malmgren, 1867) | 3.3 |
| Polydora (Polydora) caulleryi Mesnil, 1897 | 3.3 |
| Pseudopolydora pulchra (Carazzi, 1893) | 1.7 |
| Malacoceros vulgaris (Johnston, 1827) | 1.7 |
| Minuspio cirrifera (Wirén, 1883) | 1.7 |
| Drilonereis filum (Claparède, 1868) | 1.7 |
| Nicomache lumbricalis (Fabricius, 1780) | 1.7 |
| Harmothoe Kinberg, 1856 | 1.7 |
| Pycnogonum littorale (Strøm, 1762) | 1.7 |
| Nephtys caeca (Fabricius, 1780) | 1.7 |
| Verruca stroemia (O.F. Müller, 1776) | 1.7 |
| Hyas coarctatus Leach, 1815 | 1.7 |
| Eurynome aspera (Pennant, 1777) | 1.7 |
| Atylus vedlomensis (Spence Bate & Westwood, 1862) | 1.7 |
| Aplysia Linnaeus, 1767 | 1.7 |
| Onchidoris muricata (O. F. Müller, 1776) | 1.7 |
| Nucula Lamarck, 1799 | 1.7 |
| Nucula nitidosa Winckworth, 1930 | 1.7 |
| Goodallia triangularis (Montagu, 1803) | 1.7 |
| Acanthocardia (Rudicardium) tuberculata (Linnaeus, 1758) | 1.7 |
| Dosinia exoleta (Linnaeus, 1758) | 1.7 |
| Pododesmus patelliformis (Linnaeus, 1761) | 1.7 |
| Hanleya hanleyi (W. Bean, 1844) | 1.7 |
| Capulus ungaricus (Linnaeus, 1758) | 1.7 |
| Cellepora pumicosa (Pallas, 1766) | 1.7 |
| Pyripora catenularia (Fleming, 1828) | 1.7 |
| Stichastrella rosea (O.F. Müller, 1776) | 1.7 |
| Phaeostachys spinifera (Johnston, 1847) | 1.7 |
| Ophiura albida Forbes, 1839 | 1.7 |
| Amphiura filiformis (O.F. Müller, 1776) | 1.7 |
| Corella parallelogramma (Müller, 1776) | 1.7 |
| Halosydna gelatinosa (Sars, 1835) | 1.7 |
| Nemertea | 1.7 |
