Asterionella japonica Cleve, 1882 (additional source)
Aurelia aurita (Linnaeus, 1758) (additional source)
Blidingia marginata (J.Agardh) P.J.L.Dangeard ex Bliding, 1963 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Botryllus schlosseri (Pallas, 1766) (additional source)
Ceramium rubrum C.Agardh, 1811 accepted as Ceramium virgatum Roth, 1797 (additional source)
Cerataulina pelagica (Cleve) Hendey, 1937 accepted as Cerataulina bergonii Ostenfeld, 1903 (additional source)
Chaetoceros socialis H.S.Lauder, 1864 (additional source)
Ciona intestinalis (Linnaeus, 1767) (additional source)
Cladophora fracta (O.F.Müller ex Vahl) Kützing, 1843 (additional source)
Cladophora laetevirens (Dillwyn) Kützing, 1843 (additional source)
Cladophora rupestris (Linnaeus) Kützing, 1843 (additional source)
Cladophora sericea (Hudson) Kützing, 1843 (additional source)
Corallina officinalis Linnaeus, 1758 (additional source)
Cryptosula pallasiana (Moll, 1803) (additional source)
Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (additional source)
Ditylum brightwellii (T.West) Grunow, 1885 (additional source)
Elachista fucicola (Velley) Areschoug, 1842 (additional source)
Enteromorpha intestinalis (Linnaeus) Nees, 1820 accepted as Ulva intestinalis Linnaeus, 1753 (additional source)
Enteromorpha linza (Linnaeus) J.Agardh, 1883 accepted as Ulva linza Linnaeus, 1753 (additional source)
Enteromorpha prolifera (O.F.Müller) J.Agardh, 1883 accepted as Ulva prolifera O.F.Müller, 1778 (additional source)
Gomontia polyrhiza (Lagerheim) Bornet & Flahault, 1888 (additional source)
Harpacticus littoralis Sars G.O., 1910 (additional source)
Hybocodon prolifer Agassiz, 1860 (additional source)
Leathesia difformis Areschoug, 1847 accepted as Leathesia marina (Lyngbye) Decaisne, 1842 (additional source)
Microsetella rosea (Dana, 1847) (additional source)
Monstrilla helgolandica Claus, 1863 accepted as Caromiobenella helgolandica (Claus, 1863) (additional source)
Nitzschia seriata Cleve, 1883 accepted as Pseudo-nitzschia seriata (Cleve) H.Peragallo, 1899 (additional source)
Oithona similis Claus, 1866 (additional source)
Percursaria percursa (C.Agardh) Rosenvinge, 1893 (additional source)
Pione vastifica (Hancock, 1849) (additional source)
Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824 (additional source)
Protodorvillea kefersteini (McIntosh, 1869) (additional source)
Pseudopringsheimia confluens (Rosenvinge) Wille, 1909 (additional source)
Pseudosagitta maxima (Conant, 1896) (additional source)
Pylaiella littoralis (Linnaeus) Kjellman, 1872 (basis of record)
Ralfsia verrucosa (Areschoug) Areschoug, 1845 accepted as Pseudoralfsia verrucosa (Areschoug) Parente, Fletcher & G.W.Saunders, 2020 (additional source)
Rathkea octopunctata (M. Sars, 1835) (additional source)
Rhizoclonium tortuosum (Dillwyn) Kützing, 1845 (additional source)
Scytosiphon lomentaria (Lyngbye) Link, 1833 (additional source)
Skeletonema costatum (Greville) Cleve, 1873 (additional source)
Thalassiosira nordenskioeldii Cleve, 1873 (additional source)
Ulothrix flacca (Dillwyn) Thuret, 1863 (additional source)
Ulva rigida C.Agardh, 1823 (additional source)
Ulvaria obscura (Kützing) P.Gayral ex C.Bliding, 1969 (basis of record)