| Taxon | Density |
| Myriochele Malmgren, 1867 | 512.9 |
| Polydora (Polydora) socialis (Schmarda, 1861) | 199.5 |
| Harpinia antennaria Meinert, 1890 | 199.5 |
| Holothuroidea | 169.8 |
| Chaetozone setosa Malmgren, 1867 | 141.3 |
| Terebellides stroemii Sars, 1835 | 109.6 |
| Rhodine gracilior Tauber, 1879 | 100 |
| Minuspio cirrifera (Wirén, 1883) | 89.1 |
| Spiophanes kroyeri Grube, 1860 | 89.1 |
| Phtisica marina Slabber, 1769 | 89.1 |
| Thyasira Lamarck, 1818 | 79.4 |
| Phoronis Wright, 1856 | 79.4 |
| Amphiura filiformis (O.F. Müller, 1776) | 70.8 |
| Caudofoveata | 70.8 |
| Prionospio steenstrupi Malmgren, 1867 | 70.8 |
| Diplocirrus glaucus (Malmgren, 1867) | 60.3 |
| Owenia fusiformis Delle Chiaje, 1844 | 60.3 |
| Westwoodilla caecula (Spence Bate, 1857) | 60.3 |
| Nemertea | 60.3 |
| Urothoe elegans Spence Bate, 1857 | 50.1 |
| Ampharete acutifrons (Grube, 1860) | 50.1 |
| Ampelisca tenuicornis Liljeborg, 1856 | 50.1 |
| Nephtys hombergii Savigny in Lamarck, 1818 | 50.1 |
| Aricidea catherinae Laubier, 1967 | 50.1 |
| Levinsenia gracilis (Tauber, 1879) | 50.1 |
| Lagis koreni Malmgren, 1866 | 39.8 |
| Anobothrus gracilis (Malmgren, 1866) | 39.8 |
| Clymenura borealis (Arwidsson, 1906) | 39.8 |
| Antalis entalis (Linnaeus, 1758) | 39.8 |
| Pholoe Johnston, 1839 | 39.8 |
| Diastylis laevis Norman, 1869 | 39.8 |
| Sipuncula | 39.8 |
| Astacilla longicornis (Sowerby, 1806) | 30.2 |
| Myrtea spinifera (Montagu, 1803) | 30.2 |
| Hippomedon denticulatus (Spence Bate, 1857) | 30.2 |
| Ascidiacea | 30.2 |
| Echinocyamus pusillus (O.F. Müller, 1776) | 30.2 |
| Montacuta substriata (Montagu, 1808) | 30.2 |
| Gattyana cirrhosa (Pallas, 1766) | 30.2 |
| Trichobranchus glacialis Malmgren, 1866 | 30.2 |
| Glycera rouxii Audouin & Milne Edwards, 1833 | 30.2 |
| Goniada maculata Örsted, 1843 | 30.2 |
| Aricidea cerrutii Laubier, 1966 | 30.2 |
| Notomastus latericeus Sars, 1851 | 30.2 |
| Spio filicornis (Müller, 1776) | 30.2 |
| Spiophanes bombyx (Claparède, 1870) | 30.2 |
| Scoloplos armiger (Müller, 1776) | 20 |
| Paradoneis lyra (Southern, 1914) | 20 |
| Apistobranchus tullbergi (Théel, 1879) | 20 |
| Praxillella affinis (M. Sars in G.O. Sars, 1872) | 20 |
| Thracia phaseolina (Lamarck, 1818) | 20 |
| Lunatia poliana (Della Chiaje, 1826) | 20 |
| Echinocardium flavescens (O.F. Müller, 1776) | 20 |
| Leptocheirus hirsutimanus (Spence Bate & Westwood, 1862) | 20 |
| Paradulichia Boeck, 1871 | 20 |
| Amphilochus manudens Spence Bate & Westwood, 1862 | 20 |
| Lucinoma borealis (Linnaeus, 1767) | 20 |
| Diastyloides biplicatus (Sars G.O., 1865) | 20 |
| Arcturella dilatata (G. O. Sars, 1883) | 20 |
| Gnathia oxyuraea (Lilljeborg, 1855) | 10 |
| Eurydice pulchra Leach, 1816 | 10 |
| Eualus pusiolus (Krøyer, 1841) | 10 |
| Eudorellopsis deformis (Krøyer, 1846) | 10 |
| Metopa propinqua G.O. Sars, 1892 | 10 |
| Amphictene auricoma (O.F. Müller, 1776) | 10 |
| Scalibregma inflatum Rathke, 1843 | 10 |
| Nereis zonata Malmgren, 1867 | 10 |
| Laonice sarsi Söderström, 1920 | 10 |
| Lumbrineris hibernica McIntosh, 1903 | 10 |
| Peresiella clymenoides Harmelin, 1968 | 10 |
