| Taxon | Density |
| Amphiura filiformis (O.F. Müller, 1776) | 501.2 |
| Sipuncula | 204.2 |
| Lumbrineris latreilli Audouin & Milne Edwards, 1833 | 107.2 |
| Pholoe Johnston, 1839 | 107.2 |
| Mysella bidentata (Montagu, 1803) | 74.1 |
| Chaetopterus variopedatus (Renier, 1804) | 70.8 |
| Gattyana cirrhosa (Pallas, 1766) | 46.8 |
| Callianassa subterranea (Montagu, 1808) | 36.3 |
| Nephtys hombergii Savigny in Lamarck, 1818 | 33.1 |
| Phoronis Wright, 1856 | 30.2 |
| Echinocardium cordatum (Pennant, 1777) | 26.9 |
| Glycera rouxii Audouin & Milne Edwards, 1833 | 26.9 |
| Eudorella truncatula (Bate, 1856) | 20 |
| Notomastus latericeus Sars, 1851 | 20 |
| Tellimya ferruginosa (Montagu, 1808) | 20 |
| Hyala vitrea (Montagu, 1803) | 16.6 |
| Nemertea | 16.6 |
| Turritella communis Risso, 1826 | 13.2 |
| Cylichna cylindracea (Pennant, 1777) | 13.2 |
| Ophiura albida Forbes, 1839 | 13.2 |
| Corbula gibba (Olivi, 1792) | 13.2 |
| Lumbrineris hibernica McIntosh, 1903 | 13.2 |
| Harpinia antennaria Meinert, 1890 | 13.2 |
| Goniada maculata Örsted, 1843 | 13.2 |
| Gyptis capensis (Day, 1963) | 10 |
| Glycinde nordmanni (Malmgren, 1866) | 10 |
| Eunereis longissima (Johnston, 1840) | 10 |
| Anobothrus gracilis (Malmgren, 1866) | 10 |
| Owenia fusiformis Delle Chiaje, 1844 | 10 |
| Amphictene auricoma (O.F. Müller, 1776) | 10 |
| Chamelea gallina (Linnaeus, 1758) | 10 |
| Abra alba (W. Wood, 1802) | 6.8 |
| Holothuroidea | 6.8 |
| Nucula nitidosa Winckworth, 1930 | 6.8 |
| Lunatia poliana (Della Chiaje, 1826) | 6.8 |
| Lagis koreni Malmgren, 1866 | 6.8 |
| Aphrodita aculeata Linnaeus, 1758 | 6.8 |
| Glycera alba (O.F. Müller, 1776) | 6.8 |
| Levinsenia gracilis (Tauber, 1879) | 6.8 |
| Chaetozone setosa Malmgren, 1867 | 6.8 |
| Nephtys incisa Malmgren, 1865 | 6.8 |
| Ampelisca tenuicornis Liljeborg, 1856 | 6.8 |
| Aoridae Stebbing, 1899 | 3.3 |
| Diastylis bradyi Norman, 1879 | 3.3 |
| Perioculodes longimanus (Spence Bate & Westwood, 1868) | 3.3 |
| Nephtys Cuvier, 1817 | 3.3 |
| Synelmis klatti (Friedrich, 1950) | 3.3 |
| Diplocirrus glaucus (Malmgren, 1867) | 3.3 |
| Capitellidae Grube, 1862 | 3.3 |
| Spiophanes kroyeri Grube, 1860 | 3.3 |
| Ophelina acuminata Örsted, 1843 | 3.3 |
| Myriochele Malmgren, 1867 | 3.3 |
| Sthenelais limicola (Ehlers, 1864) | 3.3 |
| Enteropneusta | 3.3 |
| Arctica islandica (Linnaeus, 1767) | 3.3 |
| Mysia undata (Pennant, 1777) | 3.3 |
| Mya truncata Linnaeus, 1758 | 3.3 |
| Thracia convexa (W. Wood, 1815) | 3.3 |
| Polydora guillei Laubier & Ramos, 1974 | 3.3 |
