| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Abyssocucumis abyssorum (Théel 1886) | 0 | 3 | 0 |
| Acanthaster planci (Linnaeus 1758) | 0 | 5 | 0 |
| Actinopyga agassizi (Selenka 1867) | 0 | 4 | 0 |
| Actinopyga mauritiana (Quoy & Gaimard 1834) | 0 | 4 | 0 |
| Aeropsis fulva (A. Agassiz 1898) | 0 | 3 | 0 |
| Afrocucumis ovulum (Selenka 1867) | 0 | 3 | 0 |
| Agassizia excentrica A. Agassiz 1869 | 0 | 2 | 0 |
| Agassizia scrobiculata Valenciennes 1846 | 0 | 15 | 0 |
| Allothyone mexicana (Deichmann 1946) | 0 | 3 | 0 |
| Amphiaster insignis Verrill 1868 | 0 | 4 | 0 |
| Amphichondrius granulatus (Lütken & Mortensen 1899) | 0 | 6 | 0 |
| Amphilepis patens Lyman 1879 | 0 | 2 | 0 |
| Amphilimna olivacea (Lyman 1869) | 0 | 3 | 0 |
| Amphiodia assimilis (Lütken & Mortensen 1899) | 0 | 3 | 0 |
| Amphiodia grisea (Ljungman 1867) | 0 | 3 | 0 |
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