Appendix Table 2 The species of the fauna associated with aggregates of Filograna implexa Berkeley, 1828, sampled from the wreck of “M/S Flint” in the tidal stream Rystraumen, North Norway the spring of 1998 Species Abundance (solitary individuals) Biomass (grams wet weight) Mean SE Mean SE Porifera          Chlatrina coriacea this website (Montagu, 1812)     0.01 0.01  Leucosolenia

sp.     0.04 0.04  Halichondria sp.     1.17 0.75  Haleciidae indet.     0.01 0.01  Hymedesmia sp.     0.32 0.16  Mycale sp.     0.29 0.16  Myxilla find more sp.1     1.77 1.69  Myxilla sp.2     0.01 0.01 Cnidaria          Actinaria spp. (j) 3.13 0.93 0.11 0.06  Calycella syringa (L., 1767)     0.01 0.01  Eudendrium ramosum (L., 1758)     0.01 0.01  Lafoea MK2206 dumosa (Fleming, 1828)     0.01 0.01  Serturella polyzonias (L., 1758)     0.06 0.05  Tubularia larynx Ellis & Solander, 1786     0.19 0.19  Hydroida indet.     0.01 0.01 Platyhelminthes          Platyhelminthes sp.1 2.13 0.67 0.01 0.01  Platyhelminthes sp.2 0.38 0.26 0.05 0.03 Nematoda          Nematoda sp. 11.50 6.07 0.01 0.01 Nemertea          Nemertea sp.1 1.38 0.86 0.01 0.01  Lineus ruber (O.F.Müller, 1774) 1.38 0.52 0.14 0.06 Mollusca          Ophistobranchia indet. 0.38 0.18 0.01 0.01  Colus gracilis (da Costa, 1778) (j) 2.88 2.20 0.08 0.05  Heteranomia squamula (L., 1758) (j) 1.50 0.76 0.05 0.02  Modiolus modiolus (L., 1758) (j) 1.50 0.96 0.03 0.03  Musculus sp.1 (*) 1.38 0.84 0.28 0.21  Musculus sp.2 0.50 0.38 0.02 0.01  Musculus spp. (j) 7.38 2.76 0.01 0.01  Chlamys islandica (Müller, 1776) (j) 0.75 0.75 0.01 0.01  Hiatella arctica

(L., 1758) (j) 13.25 6.96 0.71 0.39 Annelida          Polychaeta indet. 0.5 0.27 0.01 0.01  Terebellomorpha indet. (j) 4 1.13 0.05 0.03  Cirratulus cirratulus (O.F.Müller, 1776) 0.5 0.5 0.01 0.01  Nereididae indet. 0.25 0.25 Carnitine dehydrogenase 0.01 0.01  Nereis pelagica (L., 1758) 1.75 0.90 0.21 0.12  Eulalia viridis (L., 1767) 3.13 1.23 0.03 0.01  Polydontidae spp. 3.13 1.76 0.02 0.01  Polynoidae spp. 3.25 1.46 0.28 0.11  Myxicola infundibulum (Renier, 1804) 0.63 0.63 0.01 0.01  Pseudopotamilla sp. 2.75 1.37 0.02 0.01  Sabellidae indet. 0.38 0.26 0.01 0.01  Sabella penicillus (L., 1767) 0.13 0.13 0.03 0.03  Serpulidae indet. 0.13 0.13 0.01 0.01  Chitinopoma sp. 0.75 0.49 0.01 0.01  Filograna implexa Berkeley, 1828 Not recorded        Hydroides norvegica Gunnerus, 1768 0.88 0.44 0.03 0.02  Pomatoceros triqueter (L., 1767) 2.75 1.16 0.06 0.03  Sigalionidae sp. 0.38 0.26 0.01 0.01  Jugaria granulata (L., 1767) 2.25 1.37 0.01 0.