Ablennes hians (Valenciennes, 1846) (additional source)
Abudefduf sexfasciatus (Lacepède, 1801) (additional source)
Abudefduf vaigiensis (Quoy & Gaimard, 1825) (additional source)
Abyla trigona Quoy & Gaimard, 1827 (additional source)
Acanthaster planci (Linnaeus, 1758) (additional source)
Acanthochitona achates (A. Gould, 1859) (additional source)
Acanthochitona rubrolineata (Lischke, 1873) (additional source)
Acanthogobius flavimanus (Temminck & Schlegel, 1845) (additional source)
Acanthophora muscoides (Linnaeus) Bory de Saint-Vincent, 1828 (additional source)
Acanthophora spicifera (M.Vahl) Børgesen, 1910 (additional source)
Acanthopleura gemmata (Blainville, 1825) (additional source)
Acanthurus gahhm (Forsskål, 1775) (additional source)
Acanthurus guttatus Forster, 1801 (additional source)
Acanthurus pyroferus Kittlitz, 1834 (additional source)
Acartia (Acartiura) omorii Bradford, 1976 (additional source)
Acartiella sinensis Shen & Lee, 1963 (additional source)
Acentrogobius pflaumii (Bleeker, 1853) (additional source)
Acervulina inhaerens Schultze, 1854 (additional source)
Acetabularia caliculus J.V.Lamouroux, 1824 (additional source)
Acinetospora crinita (Carmichael) Sauvageau, 1899 (additional source)
Acrochaetium densum (K.M.Drew) Papenfuss, 1945 accepted as Acrochaetium catenulatum M.Howe, 1914 (additional source)
Acrochaetium microscopicum (Nägeli ex Kützing) Nägeli, 1858 (additional source)
Acropoma japonicum Günther, 1859 (additional source)
Acrosorium venulosum (Zanardini) Kylin, 1924 (additional source)
Actaea savignii (H. Milne Edwards, 1834) (basis of record)
Actaeodes tomentosus (H. Milne Edwards, 1834) (additional source)
Actinocyclus normanii (Gregory) Hustedt, 1957 (additional source)
Aeolidiella Bergh, 1867 (additional source)
Aequorea conica Browne, 1905 (additional source)
Aequorea globosa Eschscholtz, 1829 (additional source)
Aequorea macrodactyla (Brandt, 1835) (additional source)
Aetea anguina (Linnaeus, 1758) (additional source)
Aeverrillia setigera (Hincks, 1887) (additional source)
Aglaophenia Lamouroux, 1812 (additional source)
Ahnfeltiopsis flabelliformis (Harvey) Masuda, 1993 (additional source)
Aidanosagitta neglecta (Aida, 1897) (additional source)
Akatopora leucocypha (Marcus, 1937) (additional source)
Alectryonella plicatula (Gmelin, 1791) (additional source)
Alepes djedaba (Forsskål, 1775) (additional source)
Alexandrium catenella (Whedon & Kofoid) Balech, 1985 (additional source)
Alexandrium leei Balech, 1985 (additional source)
Alpheus audouini Coutière, 1905 accepted as Alpheus edwardsii (Audouin, 1826) (additional source)
Alpheus edwardsii (Audouin, 1826) (additional source)
Alpheus inopinatus Holthuis & Gottlieb, 1958 (additional source)
Alpheus lobidens De Haan, 1849 (additional source)
Alpheus rapacida De Man, 1908 (additional source)
Amathia distans Busk, 1886 (additional source)
Ammothea hilgendorfi (Böhm, 1879) (additional source)
Amphibalanus amphitrite (Darwin, 1854) (additional source)
Amphibalanus eburneus (Gould, 1841) (additional source)
Amphibalanus improvisus (Darwin, 1854) (additional source)
Amphibalanus reticulatus (Utinomi, 1967) (additional source)
Amphibalanus variegatus (Darwin, 1854) (additional source)
Amphidinium carterae Hulburt, 1957 (additional source)
Amphioplus (Lymanella) laevis (Lyman, 1874) (additional source)
Amphiprion ocellaris Cuvier, 1830 (additional source)
Amphisorus hemprichii Ehrenberg, 1839 (additional source)
Amphistegina madagascariensis d'Orbigny in Fornasini, 1903 accepted as Amphistegina lessonii d'Orbigny in Deshayes, 1830 (additional source)
Amphogona pusilla Hartlaub, 1909 (additional source)
Ampithoe valida S.I. Smith, 1873 (additional source)
Anas platyrhynchos Linnaeus, 1758 (additional source)
Ancistrocoma pelseneeri Chatton & Lwoff, 1926 (additional source)
Anomia chinensis R. A. Philippi, 1849 (additional source)
Antennella Allman, 1877 (additional source)
Antennella secundaria (Gmelin, 1791) (additional source)
Antigona lamellaris Schumacher, 1817 (additional source)
Antithamnion cruciatum (C.Agardh) Nägeli, 1847 (additional source)
Antithamnion hubbsii E.Y.Dawson, 1962 (additional source)
Antithamnion nipponicum Yamada & Inagaki, 1935 (additional source)
Antithamnionella elegans (Berthold) J.H.Price & D.M.John, 1986 (additional source)
Antithamnionella spirographidis (Schiffner) E.M.Wollaston, 1968 (additional source)
Aoroides longimerus Ren & Zheng, 1996 (basis of record)
Apogon fasciatus (White, 1790) accepted as Ostorhinchus fasciatus (White, 1790) (additional source)
Apolemichthys trimaculatus (Cuvier, 1831) (additional source)
Apoprionospio pygmaea (Hartman, 1961) (additional source)
Arca navicularis Bruguière, 1789 (additional source)
Aricidea (Aricidea) fragilis Webster, 1879 (additional source)
Arothron hispidus (Linnaeus, 1758) (additional source)
Articulina pacifica Cushman, 1944 (additional source)
Ascidia gemmata Sluiter, 1895 (additional source)
Ascidia sydneiensis Stimpson, 1855 (additional source)
Ashtoret lunaris (Forskål, 1775) (additional source)
Asparagopsis taxiformis (Delile) Trevisan de Saint-Léon, 1845 (additional source)
Aspidosiphon (Aspidosiphon) elegans (Chamisso & Eysenhardt, 1821) (additional source)
Asterias amurensis Lutken, 1871 (additional source)
Asterionella glacialis Castracane, 1886 (additional source)
Asterionella japonica Cleve, 1882 (additional source)
Atactodea striata (Gmelin, 1791) (additional source)
Athanas dimorphus Ortmann, 1894 (additional source)
Atherinomorus lacunosus (Forster, 1801) (additional source)
Audouinella codicola (Børgesen) Garbary, 1979 accepted as Colaconema codicola (Børgesen) Stegenga, J.J.Bolton & R.J.Anderson, 1997 (additional source)
Audouinella robusta (Børgesen) Garbary, 1979 accepted as Acrochaetium robustum Børgesen, 1915 accepted as Colaconema robustum (Børgesen) Huisman & Woelkerling, 2018 (additional source)
Balanus trigonus Darwin, 1854 (additional source)
Balistoides conspicillum (Bloch & Schneider, 1801) (additional source)
Bangia fuscopurpurea (Dillwyn) Lyngbye, 1819 (additional source)
Bankia carinata (J. E. Gray, 1827) (additional source)
Bankia fimbriatula Moll & Roch, 1931 (additional source)
Barentsia laxa Kirkpatrick, 1890 (additional source)
Bathygobius cyclopterus (Valenciennes, 1837) (additional source)
Batillaria zonalis (Bruguière, 1792) (additional source)

Chinese Exclusive Economic Zone for Acar plicata (Dillwyn, 1817) 
Chinese part of the Eastern China Sea for Musculus senhousia (W. H. Benson, 1842)