Florida Keys for Eunice fucata Ehlers, 1887 
Gulf of Mexico for Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981) 
Gulf of Mexico for Aberranta palpata Wolf, 1987 
Gulf of Mexico for Ablennes hians (Valenciennes, 1846) 
Gulf of Mexico for Abra aequalis (Say, 1822) 
Gulf of Mexico for Abra lioica (Dall, 1881) 
Gulf of Mexico for Abra longicallus (Scacchi, 1835)  (inaccurate)
Gulf of Mexico for Abralia redfieldi G. L. Voss, 1955 
Gulf of Mexico for Abralia veranyi (Rüppell, 1844) 
Gulf of Mexico for Abraliopsis atlantica Nesis, 1982 
Gulf of Mexico for Abraliopsis pfefferi Joubin, 1896 
Gulf of Mexico for Abudefduf saxatilis (Linnaeus, 1758) 
Gulf of Mexico for Abudefduf taurus (Müller & Troschel, 1848) 
Gulf of Mexico for Abyla haeckeli Lens & van Riemsdijk, 1908 
Gulf of Mexico for Abylopsis eschscholtzii (Huxley, 1859) 
Gulf of Mexico for Acanella arbuscula (Johnson, 1862) 
Gulf of Mexico for Acanella eburnea (Pourtalès, 1868) 
Gulf of Mexico for Acanthaxius hirsutimanus (Boesch & Smalley, 1972) 
Gulf of Mexico for Acanthemblemaria aspera (Longley, 1927) 
Gulf of Mexico for Acanthephyra acanthitelsonis Spence Bate, 1888 
Gulf of Mexico for Acanthephyra acutifrons Spence Bate, 1888 
Gulf of Mexico for Acanthephyra armata A. Milne-Edwards, 1881 
Gulf of Mexico for Acanthephyra brevirostris Smith, 1885 
Gulf of Mexico for Acanthephyra curtirostris Wood-Mason in Wood-Mason & Alcock, 1891 
Gulf of Mexico for Acanthephyra eximea Smith, 1884 
Gulf of Mexico for Acanthephyra pelagica (Risso, 1816) 
Gulf of Mexico for Acanthephyra purpurea A. Milne-Edwards, 1881 
Gulf of Mexico for Acanthephyra stylorostratis (Spence Bate, 1888) 
Gulf of Mexico for Acanthilia intermedia (Miers, 1886) 
Gulf of Mexico for Acanthobothrium brevissime Linton, 1909 
Gulf of Mexico for Acanthobothrium floridensis Goldstein, 1964 
Gulf of Mexico for Acanthobothrium fogeli Goldstein, 1964 
Gulf of Mexico for Acanthobothrium lintoni Goldstein, Henson & Schlicht, 1968 
Gulf of Mexico for Acanthobothrium paulum Linton, 1890 
Gulf of Mexico for Acanthobothrium tortum (Linton, 1916) Baer & Euzet, 1962 
Gulf of Mexico for Acanthocarpus alexandri Stimpson, 1871 
Gulf of Mexico for Acanthocarpus bispinosus A. Milne-Edwards, 1880 
Gulf of Mexico for Acanthocereus tetragonus (Linnaeus) Hummelinck, 1938 
Gulf of Mexico for Acanthochitona astrigera (Reeve, 1847) 
Gulf of Mexico for Acanthochitona balesae Abbott, 1954 
Gulf of Mexico for Acanthochitona hemphilli (Pilsbry, 1893) 
Gulf of Mexico for Acanthochitona lineata W. G. Lyons, 1988 
Gulf of Mexico for Acanthochitona pygmaea (Pilsbry, 1893) 
Gulf of Mexico for Acanthochitona roseojugum W. G. Lyons, 1988 
Gulf of Mexico for Acanthochitona zebra W. G. Lyons, 1988 
Gulf of Mexico for Acanthocybium solandri (Cuvier, 1832) 
Gulf of Mexico for Acanthodasys aculeatus Remane, 1927 
Gulf of Mexico for Acanthogonyaulax spinifera (Murray & Whitting) H.W.Graham, 1942 
Gulf of Mexico for Acanthogorgia aspera Pourtalès, 1867 
Gulf of Mexico for Acanthogorgia schrammi (Duchassaing & Michelotti, 1864) 
Gulf of Mexico for Acanthohaustorius intermedius Bousfield, 1965 
Gulf of Mexico for Acanthohaustorius pansus Thomas & J.L. Barnard, 1984 
Gulf of Mexico for Acanthohaustorius shoemakeri Bousfield, 1965 
Gulf of Mexico for Acanthohaustorius uncinus Foster, 1989 
Gulf of Mexico for Acantholaimus quadridentatus Jensen, 1985 
Gulf of Mexico for Acantholobulus bermudensis (Benedict & Rathbun, 1891) 
Gulf of Mexico for Acanthonus armatus Günther, 1878 
Gulf of Mexico for Acanthonyx petiverii H. Milne Edwards, 1834 
Gulf of Mexico for Acanthopathes thyoides (Pourtalès, 1880) 
Gulf of Mexico for Acanthopharyngoides bidentatus Jensen, 1985 
Gulf of Mexico for Acanthophora muscoides (Linnaeus) Bory de Saint-Vincent, 1828 
Gulf of Mexico for Acanthophora spicifera (M.Vahl) Børgesen, 1910 
Gulf of Mexico for Acanthopleura granulata (Gmelin, 1791) 
Gulf of Mexico for Acanthoprimnoa goesi (Aurivillius, 1931) 
Gulf of Mexico for Acanthoprimnoa pectinata Cairns & Bayer, 2004 
Gulf of Mexico for Acanthoptilum agassizii Kölliker, 1870 
Gulf of Mexico for Acanthoptilum oligacis Bayer, 1957 
Gulf of Mexico for Acanthoptilum pourtalesii Kölliker, 1870 
Gulf of Mexico for Acanthoscina acanthodes (Stebbing, 1895) 
Gulf of Mexico for Acanthostomella lata Kofoid & Campbell, 1929 
Gulf of Mexico for Acanthostomella minutissima Kofoid & Campbell, 1929 
Gulf of Mexico for Acanthostomella obtusa Kofoid & Campbell, 1929 
Gulf of Mexico for Acanthostracion polygonius Poey, 1876 
Gulf of Mexico for Acanthostracion quadricornis (Linnaeus, 1758) 
Gulf of Mexico for Acanthotrophon striatoides E. H. Vokes, 1980 
Gulf of Mexico for Acanthozoon maculosum (Pearse, 1938) 
Gulf of Mexico for Acanthurus bahianus Castelnau, 1855 
Gulf of Mexico for Acanthurus chirurgus (Bloch, 1787) 
Gulf of Mexico for Acanthurus coeruleus Bloch & Schneider, 1801 
Gulf of Mexico for Acar domingensis (Lamarck, 1819) 
Gulf of Mexico for Acartia (Acanthacartia) spinata Esterly, 1911 
Gulf of Mexico for Acartia (Acanthacartia) tonsa Dana, 1849-1852 
Gulf of Mexico for Acartia (Acartia) danae Giesbrecht, 1889 
Gulf of Mexico for Acartia (Acartia) negligens Dana, 1849-1852 
Gulf of Mexico for Acartia lilljeborgii Giesbrecht, 1889 
Gulf of Mexico for Acasta cyathus Darwin, 1854 
Gulf of Mexico for Accalathura crenulata (Richardson, 1901) 
Gulf of Mexico for Accipiter striatus Vieillot, 1807 
Gulf of Mexico for Acentronura dendritica (Barbour, 1905) 
Gulf of Mexico for Acerotisa baiae Hyman, 1940 
Gulf of Mexico for Acervulina inhaerens Schultze, 1854 
Gulf of Mexico for Acesta bullisi (H. E. Vokes, 1963) 
Gulf of Mexico for Aceste bellidifera Thomson, 1877 
Gulf of Mexico for Acetabularia caliculus J.V.Lamouroux, 1824 
Gulf of Mexico for Acetabularia crenulata J.V. Lamouroux, 1816 
Gulf of Mexico for Acetabularia farlowii Solms-Laubach, 1895 
Gulf of Mexico for Acetabularia myriospora A.B.Joly & Cordeiro-Marino, 1965 
Gulf of Mexico for Acetabularia schenckii K. Möbius, 1889 
Gulf of Mexico for Acetes americanus Ortmann, 1893 
Gulf of Mexico for Acetes americanus carolinae Hansen, 1933