Table 2. Taxonomic classification of the morphospecies identified in this study.
| Class | Order | Family | Species | N. |
|---|---|---|---|---|
| Asteroidea | Spinulosida Perrier, 1884 | Echinasteridae Verrill, 1870 | Echinaster purpureus (Gray, 1840) | 5 |
| Valvatida Perrier, 1884 | Asterinidae | Aquilonastra cf. rowleyi O’Loughlin & Rowe, 2004 | 4 | |
| Aquilonastra sp. | 2 | |||
| Goniasteridae Forbes, 1841 | Fromia indica (Perrier, 1869) | 2 | ||
| Fromia milleporella (Lamarck, 1816) | 2 | |||
| Fromia schultzei Döderlei, 1910 | 1* | |||
| Mithrodidae Viguier, 1878 | Thromidia seychellesensis Pope & Rowe, 1977 | 2* | ||
| Ophidiasteridae Verrill, 1870 | Cistina columbiae Gray, 1840 | 1 | ||
| Ferdina sadhaensis Marsh & Campbell, 1991 | 3* | |||
| Gomophia egyptiaca Gray, 1840 | 3* | |||
| Leiaster cf. leachi (Gray, 1840) | 1 | |||
| Linckia laevigata (Linnaeus, 1758) | 3 | |||
| Nardoa variolata (Retzius, 1805) | 4* | |||
| Ophidiaster hemprichi Müller & Troschel, 1842 | 1 | |||
| Ophidiaster perrieri de Loriol, 1885 | 1* | |||
| Oreasteridae Fisher, 1911 | Choriaster granulatus (Lütken, 1869) | 1* | ||
| Monachaster sanderi (Meissner, 1892) | 4 | |||
| Protoreaster lincki (de Blainville, 1830) | 1* | |||
| Crinoidea | Comatulida Clark, 1908 | Antedonidae Norman, 1865 | Annametra occidentalis (A.H. Clark, 1915) | 5 |
| Colobometridae A.H. Clark, 1909 | Cenometra emendatrix (Bell, 1892) | 4* | ||
| Oligometra serripinna (Carpenter, 1881) | 21 | |||
| Comatulidae Flemming, 1828 | Comanthus wahlbergii (Müller, 1843) | 15 | ||
| Comanthus sp. | 1 | |||
| Mariametridae A.H. Clark, 1809 | Dichrometra palmata (Müller, 1841) | 12 | ||
| Stephanometra indica (Smith, 1876) | 1 | |||
| Tropiometridae A.H. Clark, 1908 | Tropiometra carinata (Lamarck, 1816) | 31 | ||
| Echinoidea | Camarodonta Jackson, 1912 | Echinometridae Gray, 1855 | Echinometra mathaei (de Blainville, 1825) | 3 |
| Echinostrephus molaris (de Blainville, 1825) | 4* | |||
| Temnopleuridae A. Agassiz, 1872 | Microcyphus rousseaui L. Agassiz, in Agassiz & Desor, 1846 | 1* | ||
| Temnopleurus cf. toreumaticus (Leske, 1778) | 1 | |||
| Toxopneustidae Troschel, 1872 | Tripneustes gratilla (Linnaeus, 1758) | 4 | ||
| Cidaroidea Claus,1880 | Cidaridae Gray, 1825 | Eucidaris metularia (de Lamarck, 1816) | 1 | |
| Phyllacanthus imperialis (de Lamarck, 1816) | 1* | |||
| Diadematoida Duncan, 1889 | Diadematidae Gray, 1855 | Diadema savignyi (Audouin, 1829) | 4 | |
| Diadema sp. | 1 | |||
| Echinoneoida H.L. Clark, 1925 or Clypeasteroida Agassiz, 1872 | Irregularia sp. | 1 | ||
| Spatangoida L. Agassiz 1840 | Eurypatagidae Kroh, 2007 | Eurypatagus parvituberculatus (H.L. Clark, 1924) | 1* | |
| Stomopneustoida Kroh & Smith, 2010 | Stomopneustidae Mortensen, 1903 | Stomopneustes variolaris (de Lamarck, 1816) | 1 | |
| Holothuroidea | Aspidochirotida Grube, 1840 | Holothuriidae Ludwig, 1894 | Actinopyga echinites (Jaeger, 1833) | 6 |
| Actinopyga mauritiana (Quoy & Gaimard, 1834) | 2 | |||
| Actinopyga obesa (Selenka, 1867) | 3 | |||
| Bohadschia sp. | 1 | |||
| Bohadschia subrubra (Quoy & gaimard, 1834) | 2 | |||
| Holothuria albofusca Cherbonnier, 1988 | 2* | |||
| Holothuria atra Jaeger, 1833 | 8 | |||
| Holothuria cinerascens (Brandt, 1835) | 1 | |||
| Holothuria difficilis Semper, 1867 | 1 | |||
| Holothuria edulis Lesson, 1830 | 1 | |||
| Holothuria hilla Lesson, 1830 | 8 | |||
| Holothuria impatiens Selenka, 1867 | 2 | |||
| Holothuria insignis Ludwig, 1875 | 2 | |||
| Holothuria leucospilota (Brandt, 1835) | 2 | |||
| Holothuria lineata Ludwig, 1875 | 1 | |||
| Holothuria nobilis (Selenka, 1867) | 2 | |||
| Holothuria pardalis Selenka, 1867 | 7 | |||
| Holothuria pervicax Selenka, 1867 | 2 | |||
| Holothuria rigida (Selenka, 1867) | 1* | |||
| Holothuria. sp. AB48960534 RMCA.2121 | 1 | |||
| Holothuria. sp. AB49115697 RMCA.2103 | 1 | |||
| Holothuria. sp. AB49115712 RMCA.2129 | 1 | |||
| Holothuria sp. AB49115671 RMCA.2634 | 1 | |||
| Holothuria tuberculata Thandar, 1984 | 1* | |||
| Labidodemas pertinax (Ludwig, 1875) | 1 | |||
| Dendrochirotida Grube, 1840 | Cucumariidae Ludwig, 1894 | Pseudocnella sykion (Lampert, 1885) | 1* | |
| Trachasina crucifera (Semper, 1869) | 2 | |||
| Phyllophoridae Oestergren, 1907 | Massinium arthroprocessum (Thandar, 1989) | 1* | ||
| Massinium maculosum Samyn & Thandar, 2003 | 2* | |||
| Stolus buccalis (Stimpson, 1855) | 1* | |||
| Thyone sp. | 1 | |||
| Sclerodactylidae Panning, 1949 | Ohshimella ehrenbergii (Selenka, 1868) | 2* | ||
| Ophiuroidea | Amphilepidida O’Hara, Hugall, Thuy, Stöhr & Martynov, 2017 | Amphiuridae Ljungman, 1867 | Amphilimna cribriformis H.L. Clark, 1974 | 1* |
| Amphiuridae sp. | 2 | |||
| Ophiactidae Matsumoto, 1915 | Ophiactis picteti (Müller & Troschel, 1842) | 4* | ||
| Ophiactis savignyi (Müller & Troschel, 1842) | 1 | |||
| Ophiactis sp. | 1 | |||
| Ophiolepididae Ljungman, 1867 | Ophiolepis cincta Müller & Troschel, 1842 | 5 | ||
| Ophioplocus imbricatus Lyman, 1862 | 1 | |||
| Ophionereididae Ljungman, 1867 | Ophionereis dubia (Müller & Troschel, 1842) | 1 | ||
| Ophionereis porrecta Lyman, 1861 | 8 | |||
| Ophiotrichidae Ljungman, 1867 | Macrophiothrix demessa (Lyman, 1862) | 1 | ||
| Macrophiothrix longipeda (de Lamarck, 1816) | 2 | |||
| Macrophiothrix propinqua (Lyman, 1862) | 1 | |||
| Ophiothela sp. | 2 | |||
| Ophiothela venusta (de Loriol, 1900) | 4* | |||
| Ophiothrix echinotecta Balinsky, 1957 | 3* | |||
| Ophiothrix foveolata Marktanner-Turneretscher, 1887 | 2* | |||
| Ophiothrix fragilis Abildgaard in O.F. Müller, 1789 | 1 | |||
| Ophiothrix purpurea von Martens, 1867 | 6 | |||
| Ophiothrix trilineata Lütken, 1869 | 2 | |||
| Euryalida De Lamarck, 1816 | Gorgonocephalidae Ljungman, 1867 | Astroboa nuda (Lyman, 1874) | 2 | |
| Gorgonocephalidae sp. | 1 | |||
| Ophiacanthida O’Hara, Hugall, Thuy, Stöhr & Martynov, 2017 | Ophiocomidae Ljungman, 1867 | Ophiocoma brevipes Peters, 1851 | 2 | |
| Ophiocoma cynthiae Benavides-Serrato & O’Hara, 2008 | 2 | |||
| Ophiocoma doederleini de Loriol, 1899 | 1* | |||
| Ophiocoma erinaceus Müller & Troschel, 1842 | 7 | |||
| Ophiocoma pusilla (Brock, 1888) | 1 | |||
| Ophiocoma sp. | 2 | |||
| Ophiocoma valenciae Müller & Troschel, 1842 | 1* | |||
| Ophiomastix koehleri Devaney, 1977 | 2* | |||
| Ophiodermatidae Ljungman, 1867 | Ophiarachnella gorgonia (Müller & Troschel, 1842) | 3 | ||
| Ophiarachnella septemspinosa (Müller & Troschel, 1842) | 4* | |||
| Ophiopeza fallax Peters, 1851 | 9 | |||
| Ophiopeza spinosa (Ljungman, 1867) | 3 | |||
N. Number of specimens representing each morphospecies.
*. Morphospecies for which no public COI data is available in BOLD (on 20 April 2022).